Air Flow Research Catalog.
Complete CNC Ported Cylinder Heads, CNC Ported Intake Manifolds & Parts Small Block Chevy, Big Block Chevy, Small Block Ford, Big Block Ford


RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
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TABLE OF CONTENTS
Page 1


Page 2

For Every Racing & Street Performance Application
Our mission is to manufacture the highest quality, best performing cylinder heads and intake manifolds while providing customer service beyond expectations and valuing every employee as our most important asset.




Table of Contents
Table of Contents........................................................2
Introduction ...........................................................3-5
Cylinder Head FAQ..................................................6

SMALL BLOCK CHEVY
180cc to 245cc Eliminator 23° Heads ..............7-15
210cc 245cc Spread Port Eliminator 23° Heads...16
180cc 227cc LT1/LT4 Eliminator 23° Heads .......17
220cc to 245cc Small Head Bolt Eliminator 23° Heads ....................................................................18
210cc 245cc LSX Mongoose 15° Head ..........19-22
260cc LS3 Rectangle Port Mongoose 12° Head...23

BIG BLOCK CHEVY
265cc 300cc Oval Port 24° BBC Magnum ......24-26
305cc 385cc Rectangle Port 24° BBC Magnum ..........................................................................27-34
457cc Rectangle Port 18° BBC Magnum Head ..35

SMALL BLOCK FORD
165cc 220cc Renegade 20° Heads .........36-40

BIG BLOCK FORD
280cc - 315cc 14° BBF Bullitt Head .......41-43
PARTS
Aluminum Manifolds ....................................44
Valves ...........................................................45
Cylinder Head & Valve Train Components..............................................46-48
Valve Covers ................................................49
MISCELLANEOUS
Footnotes........................................................51


Page 3






A Company Built On Performance

For over FORTY-FIVE years Air Flow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. This complete commitment to performance has enabled Air Flow Research products to find themselves on the fastest race cars and the most powerful street machines in the country. As every engine builder will attest to, the secret to increasing horsepower and performance lies in the cylinder head. Air Flow Research’s cylinder heads outflow and out horsepower everything in their league.











• Early Years - Innovation (1970-1980)
Air Flow Research early years were defined by their high-powered porting of cylinder heads, innovative porting techniques such as fast burning chambers, D-shaped big block Chevy exhaust ports, Hurricane chambers, and their CNC ported heads. In 1979, AFR pioneered CNC porting with their then revolutionary tape fed CNC machine. Air Flow Research quickly established itself as a premiere supplier to the fastest race teams in the country. Names like Bill Jenkins’ Grumpies Toy, Bob Glidden’s Fords and Chryslers, Warren Johnson, Sonny Bryant (owner Bryant Crankshafts), Joe Satmary, Richie Zul, Ed Sigmon and Frank Iaconio were getting their power from AFR.
















• AFR’s Technological Revolution (1980-1990)
Air Flow Research became a key consultant to General Motors, designing cast iron and aluminum heads for the still-popular phase 3, 4, 5, and 6 Bowtie Small Block Chevy. AFR designed the big block D port aluminum pro-stock racing head, at that time the state-of-the-art. AFR had also branched out into NASCAR, porting heads for top drivers like Darrel Waltrip, Cale Yarbrough, Richard Childress, Junior Johnson, Richard Petty, AJ Foyt, Harry Gant, and Neil Bonnet, to name a few. Air Flow Research’s pioneering use of wet-flow technology was allowing AFR cylinder heads to obtain unequaled flow and power.


• Total Manufacturing (1990-Present)
Air Flow Research advanced to full production of cylinder heads in the early 90’s by incorporating advanced high density Cast Billet technology into their southern California facility. Now able to maintain full control of design and porting technology, AFR combined their 30 years of high performance racing experience into making heads available to a much broader customer base. For the first time, racers were able to obtain full 5-axis CNC ported racing heads at an affordable price. In the mid- 90’s, Air Flow Research was the first to offer heads for the popular Gen-2 Small Block Chevy LT-1 and LT-4 engine programs and the The first to receive a CARB EO number for emission legal street heads. AFR also introduced the patented “Hydra Rev” to eliminate Hydraulic Roller valve float. In 2004 $19.10 AFR was the first to introduce the popular Gen-3 LS1 aftermarket cylinder head.




• Into The Future
Air Flow Research’s design, engineering, and manufacturing technology never rests.
A leader today, Air Flow Research is investing in the horsepower of tomorrow with new manufacturing technology, complex dyno testing, and proprietary flow testing methods.
And to assure a long standing tradition to performance, AFR is bringing up a new
generation of racers and engineers to meet the demands of tomorrow’s engine builders.



Page 4







What Makes AFR Special

While Air Flow Research has a great history of success in racing, it has been their ability to bring sophisticated porting technology to their wide assortment of cylinder heads that makes them truly special. Air Flow Research pioneered the tooling and machinery necessary for true 5-axis CNC port machining, which allows total flow consistency from head to head once the optimal port design has been established. No other manufacturer incorporates this complete machining











• Research & Development
Cylinder head technology starts with research. That includes hundreds of hours designing and hand porting intake and exhaust ports to experiment and compare flow and horsepower characteristics. Air Flow Research has tested thousands of cylinder heads over the years, for every application from top fuel dragsters to Saturday night street rods. Understanding the application and performance requirements is where AFR starts its design criteria.



• Dyno & Flow Testing
To accurately evaluate port designs, AFR spends thousands of hours on engine dynos and flow rates are all compared to determine the optimal port design for specific applications. Testing does not stop in the lab; real life testing is also required. AFR has spent more than their share of time at drag strips and circle tracks to carefully measure performance results.













• Specialized Manufacturing/Automation
Air Flow Research uses the latest in metrology technology to bring you the finest cylinder heads available today. During the manufacturing process, cylinder head castings are mounted in the machining centers and then searched for and located using optical work coordinate probing systems. This insures the most accurate location possible to begin the machining process. This eliminates the “stacked tolerance/human error” from the equation when loading and unloading cylinder heads at each work station.



• Quality Control
AFR uses state of the art metrology such as Browne & Sharp’s Coordinate Measuring
Machine (CMM). First and last articles are checked on all new set ups and breakdowns to ensure quality. We also use air gages to hold tight tolerances on all boring and honing operations, measuring down to tenths. Additionally, we practice in process lean principles throughout the facility to create a culture of each employee being responsible for the quality and visual appearance of his/her work, not just passing their work to the next department with little or no accountability. As well, we inspect all components we receive from vendors to complete the quality control loop. Lastly, there is complete documentation with SPA reports on all inspection processes.




Page 5






AFR High Performance
Cylinder Heads











Street Cylinder Heads
AFR offers a complete selection of street cylinder heads for Small Block Chevy and Small Block Ford engines. Whatever your application, emissions legal, street/ strip trophy machine, or off-road stump puller, AFR has the perfect cylinder head for your ride. Street Heads are shipped completely assembled with 100% CNC ported intake ports, exhaust port and combustion chambers.













Race Ready Cylinder Heads
AFR Race Ready Cylinder heads offer outstanding performance on the track at a reasonable cost. Typically, Race Ready Heads give you 100% CNC ported exhaust ports, combustion chambers and intake ports with coarser machine levels than the competition package to provide terrific flow characteristics for big power gains. Of course, Race Ready Heads come complete and ready to run with AFR’s proven components for maximum reliability.












Competition Package Cylinder Heads
AFR Competition Package Cylinder heads provide the next step up in power production for just a few extra dollars. In the Competition Heads, intake ports, exhaust ports and combustion chambers are all 100% CNC ported with finer machine levels and improved port shape details over the race ready for flow characteristics that can give the power you need to win. Competition Package Heads come complete and ready to run with AFR’s proven components for maximum power and reliability.


Page 6





Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads. Mismatch does not affect engine output.


SBF Emissions
- 5/8”- 11 Through Hole
- Used for connecting emissions equipment (firewall side)
- Requires supplied thermactor reducer (x2) to mount
alternator/accessory brackets.
- Confirm orientation of plug prior to installing cylinder head.

SBF 195cc Competition/205cc/220cc
-Standard 2” spacing and 3” spacing for larger O.D headers
-Factory and Aftermarket Headers

SBF Street 165cc/185cc Exhaust Pattern
-Standard 2” spacing
-Factory and Aftermarket headers


Page 7
SMALL BLOCK CHEVROLET
180cc SBC “Eliminator” 23° Street Head
The Small Port,High Velocity Torque Monster


AFR’s 180cc “Street” heads are a cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383. cubic inches, operating up to 6000 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve, 2.020 x 4.900 O.A.L. AFR #7251-1 $19.35
8mm Bead Lock Exhaust Valve, 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve  Spring, 140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Manley Chrome Moly Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 3/8 Rocker Studs AFR #6409-16 $68.94
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 O.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-1 $13.30


180cc Street Head Flow Chart
. 0.200 0.300 0.400 0.500
Int 138. 198 240 260
Exh 110 158 190 207

Test conducted at 28” of water (pressure) on Superflow 600 Bore size: 4.060””; intake 3/4” radius plate exhaust
1 3/4” curved pipe

Street CNC Chamber, Intake, & Exhaust


Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------ 180cc
Intake Port Dimension------------- 2.050” H x 1.250” W x 5/16° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume------------------------------------------------------64cc
Exhaust Port Dimension----------------------------- 1.450” H x 1.550” W
Exhaust Port Location----------------------------------------- .100” Raised
Combustion Chamber Size------------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern------------------------------------- Perimeter Bolt
Valve Angle---------------------------------------------------------------- 23°
Valve Spring Pocket Diameter--------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining------------------------ 1.750” O.D
Warning: Do not machine spring pad any deeper.
Deck Thickness---------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------4.000”
Flat Mill------------------------------------------.006” per cc 60cc Maximum
Angle Mill----------------------------------------.009” per cc 55cc Maximum
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area----------------------------------- 1.810 Sq. In
Spark Plug Dimensions------------------------14mm x .750” w/ Gasket Seat
Carb EO #-------------------------------------------------------------D-250-2


Recommended Components:
Intake Port Gasket------------------------------------------ AFR # 6900 $22.96
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket-------------------------------------AFR #
6905 $22.96
Head Gasket-----------------350 cid Fel-Pro #
1003 (AFR # 6800 $96.76 )
Head Gasket-----------------400 cid Fel-Pro #
1014 (AFR # 6802 $96.76 )
Head Bolts---------------------------ARP #
134-3701 (AFR # 6310 $128.20 )
Head Studs--------------------------ARP #
234-4301 (AFR # 6305 $321.71 )
Head Bolt Washers----------------------------Manley, AFR #
6320 $20.56
Stud Girdle--------------------------------------------------AFR #
6200 $174.71
Manifold-----------------------------------------------------AFR #
4812 $361.63
Spark Plug Starting Range---------------------------------------Autolite 3924

Pairs of Cylinder Heads
Runner  Volume Plug  Type Combustion  Chamber Part #
CNC Street Porting
180cc Straight 75cc 0911 $2,107.66
180cc Straight 65cc 0916 $2,107.66
180cc Angle 75cc 0917 $2,107.66
180cc Angle 65cc 0918 $2,107.66
180cc TBI/TPI* Angle 65cc 0919 $2,107.66
*For 1987-1995 with 72° Bolt Angle, fits either center or perimeter bolt valve cover

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov


Page 8
190cc Vortec “Eliminator”23° SBC Street Head
The Small Port, High Velocity Torque Monster


AFR’s 190cc Vortec “Street” heads are the preferred choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM.
Not compatible with self-aligning rocker arms. They come machined for both center bolt and perimeter bolt valve covers. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve, 2.020 x 4.900 O.A.L. AFR #7251-1 $19.35
8mm Bead Lock Exhaust Valve, 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve  Spring, 140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Manley Chrome Moly Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 3/8 Rocker Studs AFR #6409-16 $68.94
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-1 $13.30

190cc Street Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550
Int 135 213 253 276 279
Exh 110 158 190 207 211

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe


Street CNC Chamber, Intake, & Exhaust


Specifications & Features:
Material-----------------------------------------------------A356 Aluminum
Intake Port Volume---------------------------------------------------- 190cc
Intake Port Dimension-------------2.320” H x 1.297” W x 3/8° Radius
Intake Port Location--------------------------------------------------- Stock Exhaust Port Volume--------------------------------------------------64cc
Exhaust Port Dimension--------------------------- 1.450” H x 1.550” W
Exhaust Port Location-----......................----------------- .100” Raised
Combustion Chamber Size--------------------------------------------65cc
Valve Cover Bolt Pattern-------------------- Center & Perimeter Bolt
Valve Angle--------------------------------------------------------------- 23°
Valve Spring Pocket Diameter------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining---------------------- 1.750” O.D

Warning: Do not machine spring pad any deeper.
Deck Thickness--------------------------------------------------------- .750”
Minimum Bore Diameter---------------------------------------------- 4.00”
Flat Mill--------------------------------------.006” per cc 60cc Maximum
Angle Mill-----------------------------------.009” per cc 55cc Maximum
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------2.070 sq. in.
Spark Plug Dimensions----------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket---------- GM Vortec or Fel Pro #12895 (.120 Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket----------------------------------AFR #6905 $22.96
Head Gasket-------------350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Bolts-------------------------ARP 134-3701 (AFR #6310 $128.20 )
Head Studs------------------------ARP 234-4301 (AFR #6305 $321.71 )
Head Bolt Washers------------------------Manley, AFR #6320 $20.56
Stud Girdle-----------------------------------------------AFR #6200 $174.71
Manifold----------------------------------------- GM or Aftermarket Vortec
Spark Plug Starting Range------------------------------------Autolite 3924

Pairs of Cylinder Heads

Runner
Volume

Plug
Type

Combustion
Chamber
Part #

CNC Street Porting

190cc

Straight

65cc

0912 $2,163.47


WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 9
195cc SBC “Eliminator” 23° Street Head
The Ultimate Bolt-on Emissions Legal Street Weapon


AFR’s 195cc “Street” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. Component upgrade and machining options are available to customize AFR Heads to
your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.050 x 4.900 O.A.L. AFR #7252-1 $19.35
8mm Bead Lock Exhaust Valve 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve  Spring, 140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Manley Chrome Moly Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 3/8 Rocker Studs AFR #6409-16 $68.94
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-1 $13.30


195cc Street Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550
Int 146. 201 247 275 280
Exh 119 166 197 213 218

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe


Street CNC Chamber,
Intake, & Exhaust

Specifications & Features:
Material------------------------------------------------------ A356 Aluminum
Intake Port Volume------------------------------------------------------ 195cc
Intake Port Dimension------------ 2.110” H x 1.265” W x 5/16° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume------------------------------......-------------------64cc
Exhaust Port Dimension---------------------------- 1.450” H x 1.550” W
Exhaust Port Location---------------------------------------- .100” Raised
Combustion Chamber Size----------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern----------------------------------- Perimeter Bolt
Valve Angle----------------------------------00----------------------------- 23°
Valve Spring Pocket Diameter-------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining----------------------- 1.750” O.D

Warning: Do not machine spring pad any deeper.
Deck Thickness--------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------- 4.00”
Flat Mill---------------------------------------.006” per cc 60cc Maximum
Angle Mill------------------------------------.009” per cc 55cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------1.905 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat
Carb EO #--------------------------------------------------------------- D-250-2

Recommended Components:
Intake Port Gasket-------------------------------------------- AFR #6900 $22.96
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket---------------------------------------- AFR #6905 $22.96
Head Gasket------------------ 350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Gasket------------------ 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts---------------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs--------------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56 )
Stud Girdle--------------------------------------------------- AFR #6200 $174.71
Manifold------------------------------ AFR #4810 $448.71 or 4812 $361.63
Spark Plug Starting Range-------------------------------------Autolite 3924

Pairs of Cylinder Heads
Runner  Volume Plug  Type Combustion  Chamber Part #
CNC Street Porting
195cc Straight 65cc 1034 $2,315.10
195cc Straight 75cc 1036 $2,315.10
195cc Angle 75cc 1038 $2,315.10
195cc Angle 65cc 1040 $2,315.10
195cc TBI/TPI* Angle 65cc 1041 $2,315.10

*For 1987-1995 with 72° Bolt Angle, fits either center or perimeter bolt valve cover.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov



Page 10
195cc SBC “Eliminator” 23° Competition Race Head
The Ultimate Bolt-on Emissions Legal Street Weapon


AFR’s 195cc “Competition” heads are the preferred choice for a more
aggressive street or street/strip build. They feature 100% CNC ported
intake, exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for displacements up to 400
cubic inches, operating up to 6500-6800 RPM. Legal for 1994 and older
emissions controlled vehicles under CARB EO #D-250-2. Component
upgrade and machining options are available to customize AFR Heads
to your specific build (see pg. 47). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.080 x 4.900 O.A.L. AFR #7259-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
PAC Racing Springs 1.270 OD Hydraulic Roller Dual Valve Spring  155 lbs. on seat, .650 maximum lift, Max RPM 7000-7200 AFR #8019-1 $22.00
7º Manley Chrome Moly Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-1 $9.19
Adjustable 5/16 Guide Plates AFR #6103-1 $7.41
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-1 $13.30


195cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 151 211 260 293 304 308
Exh 125 172 207 224 229 233

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Competition CNC Chamber,
Intake, & Exhaust


Specifications & Features:
Material--------------------------------------------------- A356 Aluminum
Intake Port Volume--------------------------------------------------- 195cc
Intake Port Dimension--------- 2.185” H x 1.265” W x 5/16° Radius
Intake Port Location-------------.........................----------------- Stock
Exhaust Port Volume---------------------------------------------------64cc
Exhaust Port Dimension-------------------------- 1.460” H x 1.565” W
Exhaust Port Location-------------------------------------- .100” Raised
Combustion Chamber Size--------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern-------------------------------- Perimeter Bolt
Valve Angle-------------------------------------------------------------- 23°
Valve Spring Pocket Diameter----------------------------- 1.460” O.D
Max Valve Spring Pocket Machini..---------------------- 1.750” O.D

Warning: Do not machine spring pad any deeper.
Deck Thickness--------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------.---------------------- 4.00”
Flat Mill--------------------------------------.006” per cc 60cc Maximum
Angle Mill-----------------------------------.009” per cc 55cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area----------------------------1.920 sq. in.
Spark Plug Dimensions----------------14mm x .750” w/ Gasket Seat
Carb EO #------------------------------------------------------------ D-250-2

Recommended Components:
Intake Port Gasket---------------------------------------- AFR #6901 $21.76
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket------------------------------------- AFR #6905 $22.96
Head Gasket----------------- 350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Gasket---------------.. 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts-------------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs------------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Stud Girdle------------------------------------------------- AFR #6200 $174.71
Manifold-----------AFR #4810 $448.71, #4811 $466.85 or #4812 $361.63
Spark Plug Starting Range---------------------------------------Autolite 3924

Pairs of Cylinder Heads
Runner  Volume Plug  Type Combustion  Chamber Part #
CNC Competition Porting
195cc Angle 75cc 1094-716 $3,147.01
195cc Angle 65cc 1095-716 $3,147.01
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov



Page 11
210cc SBC “Eliminator” 23° Race Head
Powerful and Proven with Standard Valve and Stud Locations

AFR’s 210cc “Race Ready” and “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/strip builds up to 400 cubic inches, operating up to 6500-6800 RPM. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.080 x 5.000 O.A.L. AFR #7255-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-1 $9.19
Adjustable 5/16 Guide Plates AFR #6103-1 $7.41
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

210cc Race Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 145. 199 248 285 301. 309 311
Exh 110 158 192 210 214 220 222
210cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 147. 201 257 296 310 318 322
Exh 120 160 214 225 229 235 237

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Competition CNC Chamber,
Intake, & Exhaust


Specifications & Features:
Material--------------------------------------------------- A356 Aluminum
Intake Port Volume--------------------------------------------------- 210cc
Intake Port Dimension----------------------2.200” H x 1.310” W x 3/8° Radius
Intake Port Location-------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------80cc
Exhaust Port Dimension-------------------------- 1.420” H x 1.545” W
Exhaust Port Location------------------------------------- .250” Raised
Combustion Chamber Size-------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern-------------------------------- Perimeter Bolt
Valve Angle--------------------------------------------------------------- 23°
Valve Spring Pocket Diameter----------------------------- 1.580” O.D
Max Valve Spring Pocket Machining-------------------- 1.750” O.D

Warning: Do not machine spring pad any deeper.
Deck Thickness------------------------------------------------------- .750”
Minimum Bore Diameter-------------------------------------------- 4.00”
Flat Mill------------------------------------.006” per cc 60cc Maximum
Angle Mill---------------------------------.009” per cc 55cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area----------
Race Ready: 2.100 sq. in, Comp: 2.115 sq. in.
Spark Plug Dimensions----------------14mm x .750” w/ Gasket Seat
Carb EO #--------------------------------------Not Emissions Compliant

Recommended Components:
Intake Port Gasket----------------------------------------- AFR #6901 $21.76
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket------------------------------------- AFR #6905 $22.96
Head Gasket---------------- 350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Gasket---------------- 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts-------------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs------------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle------------------------------------------------ AFR #6200 $174.71
Manifold-----------------------------AFR #4810 $448.71 or #4811 $466.85
Spark Plug Starting Range-----------------------------------Autolite 3922

Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Combustion
Chamber
Part #
CNC Race Ready Porting
210cc Angle 75cc 1050 $2,577.01
210cc Angle 65cc 1054 $2,577.01
CNC Competition Porting
210cc Angle 75cc 1100 $3,172.49
210cc Angle 65cc 1103 $3,172.49

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 12
220cc SBC “Eliminator” 23° Race Head
AFR’s Ultimate SBC Head With Standard Valve and
Stud Location


AFR’s 220cc “Race Ready” and “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR’s largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical “Pro Street” style builds. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.100 x 5.000 O.A.L. AFR #7256-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

220cc Race Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 155 210 260 295 304 312 318
Exh 116 162 204 220 225 229 233
220cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 145. 207 263 299 312 316 322
Exh 120 160 214 225 229 240 244

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust


Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 220cc
Intake Port Dimension---------------2.220” H x 1.310” W x 3/8° Radius
Intake Port Location-----------................------------------------------ Stock
Exhaust Port Volume------------------------------------------------------80cc
Exhaust Port Dimension---------------------------- 1.420” H x 1.545” W
Exhaust Port Location---------------------------------------- .250” Raised
Combustion Chamber Size----------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern----------------------------------- Perimeter Bolt
Valve Angle------------------------------------------------------------------ 23°
Valve Spring Pocket Diameter-------------------------------- 1.580” O.D
Max Valve Spring Pocket Machining------------------------ 1.750” O.D

Warning: Do not machine spring pad any deeper.
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------- 4.00”
Flat Mill-----------------------------------------.006” per cc 60cc Maximum
Angle Mill--------------------------------------.009” per cc 55cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------2.180 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat
Carb EO #------------------------------------------Not Emissions Compliant

Recommended Components:
Intake Port Gasket------------------------------------------------- AFR #6901 $21.76
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket--------------------------------------- AFR #6905 $22.96
Head Gasket------------------ 350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Gasket------------------ 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts---------------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs--------------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Stud Girdle-------------------------------------------------- AFR #6200 $174.71
Manifold-------------------------------- AFR #4810 $448.71 or 4811 $466.85
Spark Plug Starting Range-------------------------------------Autolite 3922

Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Combustion
Chamber
Part #
CNC Race Ready Porting
220cc Angle 75cc 1066 $2,577.01
220cc Angle 65cc 1065 $2,577.01
CNC Competition Porting
220cc Angle 75cc 1112 $3,259.18
220cc Angle 65cc 1110 $3,259.18

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 13
227cc SBC “Eliminator” 23° Race Head
60/40 Valve Spacing for Improved Performance

AFR’s 227cc “Race Ready” and “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050” offset intake rockers for drag race only applications, see footnote page for more details). Component
upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.080 x 5.000 O.A.L. AFR #7255-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

210cc Race Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 145. 199 248 285 301. 309 311
Exh 110 158 192 210 214 220 222
210cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 147. 201 257 296 310 318 322
Exh 120 160 214 225 229 235 237

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust

Specifications & Features:

Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 227cc
Intake Port Dimension----------- 2.200” H x 1.290” W x 5/16° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume-------------------------------.......-----------------80cc
Exhaust Port Dimension---------------------------- 1.430” H x 1.540” W
Exhaust Port Location---------------------------------------- .250” Raised
Combustion Chamber Size----------------------------------- 65cc or 75cc
Valve Cover Bolt Pattern------------------------------------ Perimeter Bolt
Valve Angle----------------------------------------------------------------.. 23°
Valve Spring Pocket Diameter------------------------------- 1.580” O.D

Warning: Do not machine spring pad any deeper.
Max Valve Spring Pocket Machining--------------------------------1.680”
Deck Thickness------------------------------------------------------------ .750”
Minimum Bore Diameter------------------------------------------------- 4.00”
Flat Mill-----------------------------------------.006” per cc 60cc Maximum
Angle Mill---------------------------------------.009” per cc 55cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------2.340 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat
Carb EO #-----------------------------------------Not Emissions Compliant

Recommended Components:
Shaft Mount Rocker Arms T&D .450” off-set; AFR #6062 $1,855.33 & #6063 $1,855.33
Stud Mount Rocker Arm Hardland Sharp .050 off-set;
AFR #6035 $457.18 & #6036 $457.18
Intake Port Gasket----------------------------------------------------------- AFR #6901 $21.76
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket--------------------------------- AFR #6905 $22.96
Head Gasket----------- 350 cid Fel-Pro #1003 (AFR #6800 $96.76 )
Head Gasket----------- 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts--------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs-------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers----------------------Manley, AFR #6320 $20.56
Stud Girdle--------------------------------------------- AFR #6208 $192.66
Manifold-------------------------- AFR #4810 $448.71 or 4811 $466.85
Spark Plug Starting Range-----------------------------------Autolite 3922



Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Combustion
Chamber
Part #
CNC Race Ready Porting
210cc Angle 75cc 1050 $2,577.01
210cc Angle 65cc 1054 $2,577.01
CNC Competition Porting
210cc Angle 75cc 1100 $3,172.49
210cc Angle 65cc 1103 $3,172.49

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 14
235cc SBC “Eliminator” 23° Race Head
Performance Like A Raised Runner Head




Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.125 x 5.000 O.A.L. AFR #7253-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC #1225 Racing Springs 1.550 OD Solid Roller Dual  Drag Race Spring 250 lbs. on seat, .800 max lift  Max RPM 8000-8200 AFR #8001-16 $425.74
10º Titanium Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8505-16 $290.28
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86
235cc Competition Flow Chart
. .200  .300 .400 .500 .550 .600 .650 0.700 0.800
Int 159 221 261 295 311 318 327 331 336
Exh 120 165 214 228 237 238 243 245 250

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Competition CNC Chamber,
Intake, & Exhaust

Specifications & Features:

Material--------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------- 235cc
Intake Port Dimension------- 2.200” H x 1.290” W x 5/16° Radius
Intake Port Location------------------------------------------------ Stock
Exhaust Port Volume--------------------------------------------------80cc
Exhaust Port Dimension------------------------ 1.430” H x 1.540” W
Exhaust Port Location------------------------------------ .250” Raised
Combustion Chamber Size------------------------------- 70cc or 80cc
Valve Cover Bolt Pattern------------------------------- Perimeter Bolt
Valve Angle-------------------------------------------------------------- 23°
Valve Spring Pocket Diameter----------------------------- 1.580” O.D
Max Valve Spring Pocket Machining----------------------------1.680”

Warning: Do not machine spring pad any deeper.
Deck Thickness------------------------------------------------------- .750”
Minimum Bore Diameter--------------------------------------------- 4.00”
Flat Mill------------------------------------.006” per cc 65cc Maximum
Angle Mill----------------------------------.009” per cc 60cc Maximum

Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------2.470 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat
Carb EO #----------------------------------------Not Emissions Compliant

Recommended Components: Shaft Mount Rocker Arms
T&D .450” off-set; AFR #6062 $1,855.33 & 6063 $1,855.33
Stud Mount Rocker Arms Hardland Sharp .050 off-set;
AFR #6035 $457.18 & #6036 $457.18
Intake Port Gasket-------------------------------------- AFR #6901 $21.76

Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6905 $22.96
Head Gasket--------------- 350 cid Fel-Pro #1004 or AFR #6801 $105.23
Head Gasket----------------- 400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts--------------------------- ARP #134-3701 (AFR #6310 $128.20 )
Head Studs-------------------------- ARP #234-4301 (AFR #6305 $321.71 )
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Stud Girdle-------------------------------------------------- AFR #6208 $192.66
Manifold------------------------------- AFR #4810 $448.71 or 4811 $466.85
Spark Plug Starting Range--------------------------------Autolite 3922

Pairs of Cylinder Heads
Runner  Volume Plug  Type Combustion
Chamber
Part #
CNC Competition Porting
235cc Angle 70cc 1132TI $3,240.06
235cc Angle 80cc 1130TI $3,240.06

Page 15
245cc SBC “Eliminator” 23° NPP Race Head
Our Largest and Most Powerful 60/40 Head


AFR’s 245cc “Competition” heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. NPP stands for “no pushrod pinch”, and this is AFR’s largest 60/40 valve spacing head. These heads require shaft mount rocker arms for all applications and has extra machining for 3/8” pushrod clearance. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.125 x 5.000 O.A.L. AFR #7253-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC #1225 Racing Springs 1.550 OD Solid Roller Dual Valve Drag  Race Spring 250 lbs. on seat, .800 max lift  Max RPM 8000-8200 AFR #8001-16 $425.74
10º Titanium Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8505-16 $290.28
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.696 O.D x 1.325 I.D x .305 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

245cc Competition Flow Chart
. 0.20 0.30 0.40 0.50 0.550 0.60 0.650 0.700 0.800
Int 161 224 261 301. 311 320 331 337 345
Exh 128 165 214 228 237 238 243 245 250

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 7/8”curved pipeWARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Competition CNC Chamber,
Intake, & Exhaust

Specifications & Features:
Material-----------------------------------------------------A356 Aluminum
Intake Port Volume----------------------------------------------------235cc
Intake Port Dimension------2.200” H x 1.290” W x 5/16° Radius
Intake Port Location---------------------------------------------------Stock
Exhaust Port Volume----------------------------------------------------------------------80cc
Exhaust Port Dimension--------------------------1.430” H x 1.540” W
Exhaust Port Location----------------------------------------.250” Raised
Combustion Chamber Size-----------------------------------70cc or 80cc
Valve Cover Bolt Pattern----------------------------------Perimeter Bolt
Valve Angle-----------------------------------------------------------------23°
Valve Spring Pocket Diameter-----------------------------1.580” O.D
Max Valve Spring Pocket Machining---------------------------1.680”

Warning: Do not machine spring pad any deeper.
Deck Thickness-----------------------------------------------------------.750”
Minimum Bore Diameter-----------------------------------------------4.00”
Flat Mill---------------------------------------.006” per cc 65cc Maximum
Angle Mill------------------------------------.009” per cc 60cc Maximum
Note:
Angle mills might require a .120” thick intake gasket. Minimum Cross Sectional Area-------------------------------2.470 sq. in.
Spark Plug Dimensions---------------14mm x .750” w/ Gasket Seat
Carb EO #----------------------------------------Not Emissions Compliant

Recommended Components:
Shaft Mount Rocker Arms------------T&D .450” off-set;
AFR #6062 $1,855.33 & 6063 $1,855.33
Stud Mount Rocker Arms--Hardland Sharp .050 off-set;
AFR #6035 $457.18 & #6036 $457.18
Intake Port Gasket------------------------------------AFR # 6901 $21.76
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket------------------------------AFR # 6905 $22.96
Head Gaske------350 cid Fel-Pro #1004 or AFR # 6801 $105.23
Head Gasket----------400 cid Fel-Pro #1014 (AFR #6802 $96.76 )
Head Bolts--------------------ARP #134-3701 (AFR # 6310 $128.20 )
Head Studs----------------------------ARP #234-4301 (AFR # 6 305 )
Head Bolt Washers----------------------Manley, AFR # 6320 $20.56
Stud Girdle--------------------------------------------AFR # 6208 $192.66
Manifold-------------------------AFR #4810 $448.71 or 4811 $466.85
Spark Plug Starting Range---------------------------------Autolite 3922
Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Combustion  Chamber Part #
CNC Competition Porting
245cc Angle 70cc 1137TI $3,269.09
245cc Angle 80cc 1138TI $3,423.66

Page 16
210, 220, 227, 235cc, & 245cc SBC “Eliminator”
23° SPREAD PORT Racing Heads



Spread port heads have the center exhaust ports
spread apart approximately 1/2” over stock GM
heads. The reason for spread port heads is to achieve
additional cooling in the center of the head where the
heat concentration is greatest. As standard headers
do not fit, spread port headers are required since
the center ports are spread further apart than stock
GM products. The increased spacing on the exhaust
port also requires the use of exhaust gasket Fel-Pro
#1409. Spread port heads only come with a Stahl bolt
pattern. AFR’s spread port head has all the benefits
and features of AFR’s standard head. As all benefits
and features are the same, please review respective
page for product details (i.e. for 210cc spread port,
view page 12 on SBC Eliminator 210cc). To ensure
trouble free operation of AFR cylinder heads & parts
please view the footnotes on pg. 51 for additional
information.

Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Exhaust Type/  Combustion Chamber Part #
Race Ready CNC Strip Porting
210cc Angle Spread Port 65cc 1059 $2,577.01
210cc Angle Spread Port 75cc 1055 $2,577.01
227cc Angle Spread Port 65cc 1074 $2,577.01
227cc Angle Spread Port 75cc 1075 $2,577.01
Competition CNC Strip Porting
210cc Angle Spread Port 65cc 1106 $3,172.49
210cc Angle Spread Port 75cc 1105 $3,172.49
220cc Angle Spread Port 65cc 1114 $3,259.18
220cc Angle Spread Port 75cc 1115 $3,259.18
227cc Angle Spread Port 65cc 1124 $3,259.18
227cc Angle Spread Port 75cc 1125 $3,259.18
235cc Angle Spread Port 70cc 1134TI $3,240.06
235cc Angle Spread Port 80cc 1136TI $3,240.06
245cc Angle Spread Port 70cc 1139TI $3,423.66
245cc Angle Spread Port 80cc 1140TI $3,423.66

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 17
180, 195, 210 & 227cc SBC Gen II LT1/LT4 “Eliminator” 23° Heads

AFR’s LT1/LT4 heads are designed for the Gen II reverse
cooled SBC engine from 1992-1997. They feature all the same benefits and quality components as AFR’s Gen I SBC Heads. Additionally they are machined to accept both center bolt and perimeter bolt valve covers. Not compatible with self-aligning rocker arms.

Please view the corresponding pages for product details and flow charts. EX: for 195 LT Street Port view page 11 on SBC 195cc Eliminator. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Recommended Components:
SBC 180-195cc LT Street Porting
Intake Port Gasket-----------------------GM #12524653 LT1 / Fel-Pro #1284
Important: Do not port match your intake manifold to Fel-Pro/GM LT1
gasket as it does not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket------------------------------------------ AFR #6905 $22.96
Head Gasket---------------------- 350cid Fel-Pro #1074, AFR #6803$116.66
Head Bolts------------------------------ ARP #134-3701, AFR #6310 $128.20
Head Studs----------------------------- ARP #234-4301, AFR #6305 $321.71
Head Bolt Washers------------------------------ Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------- AFR #6200 $174.71
Manifold-----------------------------------------------------------GM LT1 or LT4
Spark Plug Starting Range---------------------------------------Autolite 3924

SBC 195-227cc LT Competition/Race Ready Porting
Intake Port Gasket-------------------------------------------- AFR #6860 $22.98

Important: Do not port match your intake manifold to Fel-Pro/GM LT1
gasket as it does not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket----------------------------------------- AFR #6905 $22.96
Head Gasket------------------------------- 350cid Fel-Pro #1074, AFR #6803 $105.23
Head Bolts----------------------------- ARP #134-3701, AFR #6310 $128.20
Head Studs---------------------------- ARP #234-4301, AFR #6305 $321.71
Head Bolt Washers----------------------------- Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------- AFR #6200 $174.71
Manifold---------------------------------------------GM LT4 or Edelbrock LT4
Spark Plug Starting Range---------------------------------------Autolite 3922

Competition CNC Chamber,
Intake, & Exhaust

Pairs of Cylinder Heads
Runner  Volume Combustion Chamber Plug Type Part #
SBC LT Street CNC Ported Head
*180cc 54cc GM LT1 0909 $2,260.41
*195cc 54cc GM LT1 1032 $2,482.74
*180cc 65cc GM LT1 0908 $2,260.41
*195cc 65cc GM LT1 1031 $2,482.74
SBC LT Race Ready CNC Ported Head
210cc 65cc GM LT4 1057 $2,755.29
227cc 65cc GM LT4 1076 $2,755.29
SBC LT Competition CNC Ported Head
*195cc 65cc GM LT4 1039 $3,230.74
210cc 65cc GM LT4 1101 $3,481.34
227cc 65cc GM LT4 1126 $3,551.78
* Heads marked with Asterick are emissions legal
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 18

220, 227, 235cc, & 245cc SBC “Eliminator” 23°
SMALL HEAD BOLT Racing Heads




Includes 4 special ARP Studs AFR P/N 6404 $21.78

Small head bolt hole heads are specifically designed for severe
endurance, high compression, high cylinder pressure, alcohol fuel applications. Two head bolts in Small Block Chevy heads are inherently thin with the OEM design. These smaller head bolts add an extra 1/16” of material to thin areas increasing the strength of the head. The heads are supplied with four special ARP 3/8” X 7/16” head stud that must be used in this head. AFR’s small head bolt heads has all the same features and benefits of AFR standard heads. As all the features and
benefits are the same, please review the respective page for product details. To ensure trouble free operation of AFR cylinder heads & parts please view footnotes on pg 51 for additional information.

Pairs of Cylinder Heads
Runner
Volume
Plug
Type
Exhaust Type/  Combustion Chamber Part #
Competition CNC Strip Porting
220cc Angle Std Exhaust 65cc 1200 $3,401.41
220cc Angle Std Exhaust 75cc 1201 $3,401.41
220cc Angle Spread Port 65cc 1203 $3,401.41
220cc Angle Spread Port 75cc 1204 $3,401.41
227cc Angle Std Exhaust 65cc 1205 $3,401.41
227cc Angle Std Exhaust 75cc 1206 $3,401.41
227cc Angle Spread Port 65cc 1207 $3,401.41
227cc Angle Spread Port 75cc 1208 $3,401.41
235cc Angle Std Exhaust 70cc 1209TI $3,590.63
235cc Angle Std Exhaust 80cc 1210TI $3,590.63
235cc Angle Spread Port 70cc 1211TI $3,590.63
235cc Angle Spread Port 80cc 1212TI $3,590.63
245cc Angle Std Exhaust 70cc 1214TI $3,793.75
245cc Angle Std Exhaust 80cc 1215TI $3,793.75
245cc Angle Spread Port 70cc 1216TI $3,793.75
245cc Angle Spread Port 80cc 1217TI $3,793.75

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 19
210cc LSx Cathedral Port “Mongoose”
15° Competition Head

The Small Port, Emission Legal High Velocity Torque Monster

AFR’s emission legal (CARB #D-250-4) 210cc LSX heads are the
cost effective performance choice over re-worked factory heads.
They feature 100% CNC ported intake, exhaust & chambers, A356
aluminum castings, Titanium retainers and high quality components
throughout. Recommended for street, towing, or street/strip engines
with displacements up to 383. cubic inches, operating up to 6300 $24.24
RPM. Requires minimum 3.900” bore size for intake valve clearance.
Component upgrade and machining options are available to customize
AFR Heads to your specific build (see pg. 47). To ensure trouble free
operation of AFR cylinder heads & parts please view the footnotes on
pg. 51 for additional information. AFR heads are available bare (without
parts), call our tech line for details.


Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.020 x 4.900 O.A.L. AFR #7207-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 4.900 O.A.L. AFR #7228-1 $24.19
PAC Racing Springs 1.290 OD 8mm Bead Lock Intake Valve 2.020 x 4.900 O.A.L. Hydraulic Roller Dual Valve Spring 140. lbs. on seat, .600 maximum lift Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Titanium Retainers
1.245 O.D x .885 I.D x .655 I.D
AFR #8512-16 $174.16
7° Bead Locks Valve Keepers AFR #9007-16 $48.38 *
Viton Valve Seals .600
O.D x .495 I.D
AFR #6612-16 $17.41
Hardened Valve Spring
O.D Locator 1.380 O.D x .570 I.D
AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats
2.131 O.D x 1.680 I.D x .375 Deep
AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats
1.650 O.D x 1.350 I.D x .375 Deep
AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

*LS1 bead locks and aftermarket bead locks are not interchangeable.
GM made their bead lock radius and depth different,
AFR locks are the same as GM LS1.
210cc Competition
0.200 0.300 0.400 0.500 0.550 0.600
Int 147. 214 249 284 296 301.
Exh 111 150 209 225 230 233

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 3.900”; intake 3/4” radius plate exhaust 1 3/4” curved pipe


Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material--------------------------------------------------------- A356 Aluminum
Intake Port Volume--------------------------------------------------------- 210cc
Intake Port Dimension---3.275” H x 1.120” W x 5/16° top 3/8° Bottom
Intake Port Location------------------------------------------------------- Stock
Exhaust Port Volume---------------------------------------------------------84cc
Exhaust Port Dimension------------------------------- 1.415” H x 1.710” W
Exhaust Port Location----------------------------------------------------- Stock
Combustion Chamber Size-------------------------------------------------66cc
Valve Cover Bolt Pattern----------------------------------------- Center Bolt
Valve Angle-------------------------------------------------------------------- 15°
Valve Spring Pocket Diameter----------------------------------- 1.510” O.D
Max Valve Spring Pocket Machining-------------------------- 1.525” O.D
Deck Thickness------------------------------------------------------------- .750”
Minimum Bore Diameter-------------------------------------------------3.900”
Flat Mill----------------------------------------- .006” per cc, 58cc Maximum
Minimum Cross Sectional Area---------------------------------2.185 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Tapered Seat

Recommended Components:
Intake Port Gasket-------------------------------------------------GM or FAST
Exhaust Port Gasket-------------------------------------------- GM #12558573
Head Gasket-------------------Cometic 3.930 .040” or AFR #6846 $197.14
Head Bolts (97-03)------------------ ARP 134-3609 or AFR #6330 $256.41
Head Studs (97-03)----------------- ARP 234-4110 or AFR #6331 $440.25
Head Bolts (04+)- ------------------ ARP 134-3610 or AFR #6334 $164.49
Head Studs (04+)-------------------- ARP 234-4317 or AFR #6335 $426.94
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Manifold--------------------------------------- FAST 90mm, 92mm or 102mm
Spark Plug Starting Range------------------------------------------ NGK TR55

Pairs of Cylinder Heads
Runner  Volume Combustion  Chamber Part #
CNC Competition Porting
210cc CNC Ported w/parts 66cc 1510 $3,038.50
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 20
215cc LSx Cathedral Port “Mongoose”
15° Competition Head

The Medium Sized, High Velocity Torque Monster

AFR’s 215cc LSX heads feature 100% CNC ported intake, exhaust
& chambers, A356 aluminum castings, Titanium retainers and high
quality components throughout. Recommended for moderate street
or street/strip builds with displacements up to 408 cubic inches,
operating up to 6500 RPM. Requires minimum 3.900” bore size for
intake valve clearance. Component upgrade and machining options
are available to customize AFR Heads to your specific build (see pg.
47). To ensure trouble free operation of AFR cylinder heads & parts
please view the footnotes on pg. 51 for additional information. AFR
heads are available bare (without parts), call our tech line for details.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.020 x 4.900 O.A.L. AFR #7207-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 4.900 O.A.L. AFR #7228-1 $24.19
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve Spring  140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Titanium Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8512-16 $174.16
7° Bead Locks Valve Keepers AFR #9007-16 $48.38 *
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

215cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 149. 215 259 293 300 303
Exh 111 150 209 225 230 233

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------ A356 Aluminum
Intake Port Volume---------------------------------------------------- 215cc
Intake Port Dimension 3.275” H x 1.120” W x 5/16° top 3/8° Bottom
Intake Port Location------------------------------------------------ Stock
Exhaust Port Volume--------------------------------------------------85cc
Exhaust Port Dimension------------------------- 1.415” H x 1.710” W
Exhaust Port Location----------------------------------------------- Stock
Combustion Chamber Size-------------------------------------------65cc
Valve Cover Bolt Pattern------------------------------------ Center Bolt
Valve Angle--------------------------------------------------------------- 15°
Valve Spring Pocket Diameter------------------------------ 1.510” O.D
Max Valve Spring Pocket Machining--------------------- 1.525” O.D
Deck Thickness------------------------------------------------------- .750”
Minimum Bore Diameter--------------------------------------------3.900”
Flat Mill------------------------------------ .006” per cc, 58cc Maximum
Minimum Cross Sectional Area----------------------------2.260 sq. in.
Spark Plug Dimensions---------------14mm x .750” w/ Tapered Seat

Recommended Components:
Intake Port Gasket---------------------------------------------GM or FAST
Exhaust Port Gasket---------------------------------------- GM #12558573
Head Gasket--------------Cometic 4.160 .040” or AFR #6848 $197.14
Head Bolts (97-03)------------- ARP 134-3609 or AFR #6330 $256.41
Head Studs (97-03)------------- ARP 234-4110 or AFR #6331 $440.25
Head Bolts (04+)- --------------- ARP 134-3610 or AFR #6334 $164.49
Head Studs (04+)---------------- ARP 234-4317 or AFR #6335 $426.94
Head Bolt Washers-------------------------Manley, AFR #6320 $20.56
Manifold-------------------------- FAST 90mm, 92mm or 102mm
Spark Plug Starting Range----------------------------- NGK TR55


Pairs of Cylinder Heads
Runner  Volume Combustion  Chamber Part #
CNC Competition Porting
215cc CNC Ported w/parts 65cc 1530 $3,129.79

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 21
230cc LSx Cathedral Port “Mongoose”
15° Competition Head
The Ultimate Bolt-On Emission Legal Street/Strip Weapon

AFR’s emission legal (CARB #D-250-4) 230cc LSX heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, Titanium retainers and high quality components throughout. Recommended for aggressive street or street/strip builds with displacements up to 427 cubic inches, operating up to 6500 RPM. Requires minimum 3.900” bore size for intake valve clearance. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.


Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.080 x 4.900 O.A.L. AFR #7208-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 4.900 O.A.L. AFR #7228 $21.83-1
PAC Racing Springs 1.270 OD Hydraulic Roller Dual Valve Spring  155 lbs. on seat, .650 maximum lift  Max RPM 7000-7200 AFR #8019-16 $352.00
7º Titanium Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8512-16 $174.16
7° Bead Locks Valve Keepers AFR #9007 $48.50 *
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

*LS1 bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different, AFR locks are the same as GM LS1.
230cc Small Bore Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 157 224 272 311 320 324
Exh 129 183 225 244 248 252

230cc Large Bore Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 158 230 282 320 325 328
Exh 129 183 225 244 248 252

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 3.900” SM, 4.155” LG; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------- A356 Aluminum
Intake Port Volume-------------------------------------------------- 230cc
Intake Port Dimension 3.250” H x 1.115” W x 5/16° top 3/8° Bottom
Intake Port Location-------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------86cc
Exhaust Port Dimension--------------------------- 1.385” H x 1.695” W
Exhaust Port Location------------------------------------------------ Stock
Combustion Chamber Size-------------------------- 62cc, 65cc, or 72cc
Valve Cover Bolt Pattern-------------------------------------- Center Bolt
Valve Angle---------------------------------------------------------------- 15°
Valve Spring Pocket Diameter-------------------------------- 1.510” O.D
Max Valve Spring Pocket Machining---------------------- 1.525” O.D
Deck Thickness-------------------------------------------------------- .750”
Minimum Bore Diameter---------------------------------------------3.900”
Flat Mill - 62cc Chamber----------------- .006” per cc, 58cc Maximum
Flat Mill - 72cc Chamber-------------------------- .006” per cc, 67cc Maximum
Minimum Cross Sectional Area-----------------------------2.425 sq. in.
Spark Plug Dimensions----------------14mm x .750” w/ Tapered Seat

Recommended Components:
Intake Port Gasket----------------------------------------------GM or FAST
Exhaust Port Gasket---------------------------------------- GM #12558573
Head Gasket for Small Bore--Cometic 3.930 .040” or AFR #6846 $197.14
Head Gasket for Large Bore--Cometic 4.160 .040” or AFR #6848 $197.14
Head Bolts (97-03)------------------ ARP 134-3609 or AFR #6330 $256.41
Head Studs (97-03)----------------- ARP 234-4110 or AFR #6331 $440.25
Head Bolts (04+)- ------------------- ARP 134-3610 or AFR #6334 $164.49
Head Studs (04+)-------------------- ARP 234-4317 or AFR #6335 $426.94
Head Bolt Washers-------------------------------Manley, AFR #6320 $20.56
Manifold--------------------------------------- FAST 90mm, 92mm or 102mm
Spark Plug Starting Range----------------------------------------- NGK TR55


Pairs of Cylinder Heads
Runner  Volume Combustion  Chamber Part #
CNC Competition Porting - Large Bore (4.000+)
230cc Emission Legal CNC Ported w/parts 62cc 1610 $3,311.25
230cc Emission Legal CNC Ported w/parts 72cc 1630 $3,311.25
CNC Competition Porting - Small Bore (3.900+)
230cc CNC Ported w/parts 65cc 1660 $3,311.25

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 22
245cc LSx Cathedral Port “Mongoose”
15° Competition Head
Our Max Effort Cathedral Port Offering


AFR’s 245cc LSX “Competition” ported heads feature 100% CNC
ported intake, exhaust & chambers, A356 aluminum castings, Titanium
retainers and high quality components throughout. Recommended for
race applications or radical “Pro Street” style builds with displacements
up to 454 cubic inches, operating up to 6800 $96.76 RPM. Requires minimum
4.000 bore size for intake valve clearance. Component upgrade
and machining options are available to customize AFR Heads to
your specific build (see pg. 47). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.165 x 4.900 O.A.L. AFR #7211 $21.83
8mm Bead Lock Exhaust Valve 1.600 x 4.900 O.A.L. AFR #7228 $21.83-1
PAC Racing Springs 1.270 OD Hydraulic Roller Dual Valve Spring  155 lbs. on seat, .650 maximum lift  Max RPM 7000-7200 AFR #8019-16 $352.00
7º Titanium Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8512-16 $174.16
7° Bead Locks Valve Keepers AFR #9007-16 $48.38 *
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.200 O.D x 1.750 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

245cc Large Bore Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 164 233 290 332 347 356 360.
Exh 131 185 227 247 249 257 267

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material---------------------------------------------------- A356 Aluminum
Intake Port Volume---------------------------------------------------- 245cc
Intake Port Dimension 3.315” H x 1.145” W x 11/32° top 13/32° Bottom
Intake Port Location--------------------------------------------------- Stock
Exhaust Port Volume-----------------------------------------------------88cc
Exhaust Port Dimension---------------------------- 1.495” H x 1.730” W
Exhaust Port Location------------------------------------------------- Stock
Combustion Chamber Size----------------------------------- 65cc or 73cc
Valve Cover Bolt Pattern-------------------------------------- Center Bolt
Valve Angle----------------------------------------------------------------- 15°
Valve Spring Pocket Diameter-------------------------------- 1.510” O.D
Max Valve Spring Pocket Machining---------------------- 1.525” O.D
Deck Thickness--------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------4.000”
Flat Mill - 65cc------------------------------ .006” per cc, 58cc Maximum
Flat Mill - 73cc------------------------------ .006” per cc, 65cc Maximum
Minimum Cross Sectional Area------------------------------2.680 sq. in.
Spark Plug Dimensions----------------14mm x .750” w/ Tapered Seat

Recommended Components:
Intake Port Gasket-----------------------------------------------GM or FAST
Exhaust Port Gasket------------------------------------------ GM #12558573
Head Gasket-------------------Cometic 4.200 .040” or AFR #6845 $201.99
Head Bolts (97-03)------------------ ARP 134-3609 or AFR #6330 $256.41
Head Studs (97-03)----------------- ARP 234-4110 or AFR #6331 $440.25
Head Bolts (04+)- ------------------ ARP 134-3610 or AFR #6334 $164.49
Head Studs (04+)------------------- ARP 234-4317 or AFR #6335 $426.94
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Manifold-------------------------------------- FAST 90mm, 92mm or 102mm
Spark Plug Starting Range---------------------------------------- NGK TR55


Pairs of Cylinder Heads
Runner  Volume Combustion  Chamber Part #
CNC Competition Porting - Large Bore
245cc CNC Ported w/parts 65cc 1680 $3,438.94
245cc CNC Ported w/parts 73cc 1690 $3,438.94

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 23
260cc LS3 Rectangle Port “Mongoose”
12° Competition Head


AFR’s 260cc LS3 “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout. They’re designed for 4.000 or larger bore applications up to 454 CI, operating up to 7000 RPM. Emmisons legal for 2008 to 2015 vehicles under CARB #D-250-5. To ensure trouble free operation please view the footnotes on pg. 51 for additional information. Includes new rocker arm stands for use with LS3 1.7 ratio rocker arms. OEM rocker arm stands will not work with these heads. Aftermarket rocker arms designed for OEM LS3 applications will not work (see recommended components for rocker options).

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5-Angle Valve Job
8mm Bead Lock Intake Valve 2.165 X5.200 O.A.L. AFR #7214-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 X 5.205 O.A.L. AFR #7212-1 $24.19
PAC Racing Springs 1.270 OD Hydraulic Roller  Dual Valve Spring 155 lbs. on seat,  .650 maximum lift Max RPM 7000 to 7200 $19.35 AFR #8019-16 $352.00
7° Titanium Retainers 1.245 O.D X .885 I.D X .655 I.D AFR #8512-16 $174.16
7 ° Bead Lock Valve Keepers AFR #9007-16 $48.38
Viton Valve Seal .600 O.D X .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D X .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats  2.200 O.D X 1.750 I.D X.375 deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats  1.650 O.D X 1.350 I.D X .375 deep AFR #9069 $13.30
8mm Bronze Valve Guides .502 O.D X 2.550 O.A.L. AFR #9053 $13.34
Rocker Rail Stand AFR #6040 $165.70

260cc Large Bore Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.650 0.700
Int 159 234 293 336 366 377 384
Exh 112 158 207 235 248 251 255

Test conducted at 28” of water (pressure) on Superflow 600
Bore Size: 4.060”, intake 3/4” radius plate ,exhaust 2” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 260cc
Intake Port Dimension----------- 2.610” H X 1.300” W X 7/16° Radius
Intake Port Location------------------------------------------------------ Stock
Exhaust Port Volume -------------------------------------------------------95cc
Exhaust Port Dimension------------------------------1.540” H X 1.760” W
Exhaust Port Location---------------------------------------------------- Stock
Combustion Chamber Size------------------------------------------------69cc
Valve Cover Bolt Pattern----------------------------------------------- Center Bolt
Valve Angle-------------------------------------------------------------------- 12°
Valve Spring Pocket Diameter---------------------------------- 1.490” O.D
Max Valve Spring Pocket Machining----------------------------------- 1.51
Warning: Do not machine spring pad any deeper.
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------4.000”
Flat Mill------------------------------------------ .006 per cc, 62cc Maximum
Minimum Cross Sectional Area-----------------------------------------2.875
Spark Plug Dimensions---------------- 14mm X .750” W/ Tapered Seat
Carb EO#------------------------------------------------------------------ D-250-5

Recommended Components:
Intake Port Gasket---------------------------- Factory GM or Aftermarket
Recommend Rockers - OEM w/ trunion upgrade
Yella Terra 6733 $2.43 w/ 5132 Valve Cover gasket.-----------
Scorpion 1162
Exhaust Port Gasket-------------------------------- Factory GM #12558573
Head Gasket-------------------------------------------Cometic 4.160 Bore Size
Head Bolt Kit-------------------------- ARP #134-3610 AFR #6334 $164.49
Head Stud Kit 2004 $19.10 & Later Blocks ARP #234-4317 AFR #6335 $426.94, Pre 2004 $19.10 Blocks ARP #234-4316
Head Bolt Washers -------------------------------------- AFR #6320 $20.56
Suggested Manifold---------------------------------Fast 92 or 102mm MSD
Spark Plug Starting Range----------------------------------------- NGK TR55
Pushrods: Longer than Stock ( see instructions for details)


Pairs of Cylinder Heads
Runner  Size Description Combustion  Chamber Part #
As Cast w/ Partial CNC Porting
260cc CNC Ported w/parts 6 BOLT 69cc 1840 $3,468.34
260cc CNC Ported w/parts 69cc 1845 $3,468.34

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 24
BIG BLOCK CHEVY
265cc Oval Port “Magnum” BBC 24°
Small Port, High Velocity, Torque Monster


AFR’s 265cc “As Cast” heads are the cost effective performance choice over re-worked factory heads. They feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 468 cubic inches, operating
up to 6200 $174.71 RPM. Also available with 100% CNC chambers for increased air flow (see chart). Component upgrades and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
75% CNC Ported Exhaust Ports (Bowl Blend), 75% CNC Chambers  80% CNC Ported Intake Ports (Bowl Blend)  Competition 5 Angle Valve Job
11/32 Intake Valve 2.190 x 5.460 O.A.L. AFR #7601-1 $27.81
11/32 Nail Head Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7630-1 $27.81
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift  Max RPM 6500-6700 AFR #8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.000 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

265cc w/ 100% CNC Chamber Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 164 236 291 326 335 342 345
Exh 135 190 230 258 265 274 280

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.310”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 265cc
Intake Port Dimension---------------2.030” H x 1.830” W x 1/2° Radius
Intake Port Location------------------------------------------------------ Stock
Exhaust Port Volume------------------------------------------------------ 132cc
Exhaust Port Dimension------------------------------ 1.770” H x 2.010” W
Exhaust Port Location------------------------------------------ .375” Raised
Combustion Chamber Size (Partial CNC)--------------------------- 109cc
Combustion Chamber Size (Full CNC)------------------------------ 112cc
Valve Cover Bolt Pattern-------------------------------------------Perimeter
Valve Angle------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter---------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining------------------------- 1.750” O.D
Deck Thickness------------------------------------------------------------ .750”
Minimum Bore Diameter------------------------------------------------4.125”
Flat Mill .006” Per CC / Maximum 102cc As Cast or CNC Chamber
Angle Mil .009” Per CC / Maximum 97cc As Cast or CNC Chamber
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------2.640 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket---------------------------------------- AFR #6863 $35.08
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.
Exhaust Port Gasket------------------------------------- AFR #6858 $31.44
Head Gasket-------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts--------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts-----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs---------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)-------------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometryj)
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold---- Performer RPM, Air Gap #7561 or Victor Jr
Spark Plug Starting Range------------------------------------Autolite 3924

Pairs of Cylinder Heads
Runner  Size Description Combustion  Chamber Part #
As Cast w/ Partial CNC Porting
265cc CNC bowl blend, Partially CNC Chamber  w/ Hydraulic Roller Springs 109cc 3610 $2,956.18
265cc CNC bowl blend, Partially CNC Chamber  w/ Solid Roller Springs 109cc 3620 $2,991.05
265cc CNC bowl blend, Fully CNC Chambers  w/ Hydraulic Roller Springs 112cc 3610-1 $3,236.46
265cc CNC bowl blend, Fully CNC Chambers  w/ Solid Roller Springs 112cc 3620-1 $3,268.85
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

 

Page 25
290cc Oval Port “Magnum” BBC 24°
Our Medium Sized Oval Port


AFR’s 290cc Oval Port heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for moderate street, or street/strip builds with displacements up to 509 cubic inches, operating up to 6500 RPM. Component upgrades and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the
footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.250 x 5.500 O.A.L. AFR #7620-1 $27.81
11/32 Nail Head Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7630-1 $27.81
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift  Max RPM 6500-6700 AFR #8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.000 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

290cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Int 163 235 289 330 346 360. 368 375
Exh 135 180 230 262 271 278 286 292

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.310”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------ 290cc
Intake Port Dimension--------------2.030” H x 1.830” W x 1/2° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------- 135cc
Exhaust Port Dimension------------------------------ 1.770” H x 2.010” W
Exhaust Port Location------------------------------------------ .375” Raised
Combustion Chamber Size (Full CNC)------------------------------- 112cc
Valve Cover Bolt Pattern--------------------------------------------Perimeter
Valve Angle-------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter---------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining------------------------- 1.750” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------------------------------4.250”
Flat Mill------------------------------------ .006” Per CC / Maximum 102cc
Angle Mill------------------------------------.009” Per CC / Maximum 97cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------2.895 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket--------------------------------------- AFR #6863 $35.08
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6858 $31.44
Head Gasket------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket---------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts---------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs-------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt W-----------------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Spec---------------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold---- Performer RPM, Air Gap #7561 or Victor Jr
Spark Plug Starting Range------------------------------------Autolite 3924

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition CNC Ported Heads
290cc CNC Ported w/ 1.550 OD Hydraulic Roller Springs 112cc 3640 $4,112.08
290cc CNC Ported w/ 1.550 OD Solid Roller Springs 112cc 3650 $4,145.09

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 26
300cc Oval Port “Magnum” BBC 24°
The Ultimate Street/Race Weapon


AFR’s 300cc Oval Port heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for aggressive street, street/strip or race builds with displacements up to 540 cubic inches, operating up to 6800 $96.76 RPM. Component upgrades and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure
trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Nailhead Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7630-1 $27.81
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring  275 lbs. on seat, .850 maximum lift, Max RPM 7400-7600  Uses #8518 $4.85 Steel Retainer (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift, Max RPM 6500-6700;  Uses #8511 $3.64 Steel Retainer and #8048 $4.85 Spring Cup AFR #8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

300cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650 0.700
Int 165 240 300 345 369 380. 390 394
Exh 135 185 234 266 285 295 301. 314

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.500”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material------------------------------------------------------ A356 Aluminum
Intake Port Volume------------------------------------------------------- 300cc
Intake Port Dimension--------------2.055” H x 1.840” W x 1/2° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------- 135cc
Exhaust Port Dimension------------------------------ 1.770” H x 2.010” W
Exhaust Port Location------------------------------------------ .375” Raised
Combustion Chamber Size (Full CNC)------------------------------- 112cc
Valve Cover Bolt Pattern--------------------------------------------Perimeter
Valve Angle------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter---------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining------------------------- 1.750” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------------------------------4.250”
Flat Mill----------------------------------- .006” Per CC / Maximum 102cc
Angle Mill-----------------------------------.009” Per CC / Maximum 97cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------3.020 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket----------------- AFR #6863 $35.08 or GM #12366985
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket-------------------------------------- AFR #6858 $31.44
Head Gasket-------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts-------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs--------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------ AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)-----
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold----- Performer RPM, Air Gap #7561 or Victor Jr
Spark Plug Starting Range-------------------------------------Autolite 3924

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
300cc Fully CNC Ported - Hydraulic Roller 112cc 3670 $4,200.98
300cc Fully CNC Ported - Solid Roller 112cc 3680 $4,341.94

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 27
305cc Rectangle Port “Magnum” BBC 24°
AFR’s Torque Monster


AFR’s 305cc rectangle port heads feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for moderate street, or street/strip builds with displacements up to 509 cubic inches, operating up to 6500 RPM. Also available with 100% CNC chambers for increased air flow (see chart). Component upgrades and machining options are available to customize AFR Heads to your specific build (see pg. 47).
To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
50% CNC Ported Combustion Chambers  20% CNC Ported Exhaust Ports  30% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.250 x 5.500 O.A.L. AFR #7620-1 $27.81
11/32 Nail Head Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7630-1 $27.81
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

305cc As Cast Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 154 223 287 335 363 368
Exh 133 175 210 239 261 268
305cc w/ 100% CNC Chamber Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 168 242 303 339 360. 362
Exh 142. 187 225 252 271 274

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.310”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Partial CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material------------------------------------------------ A356 Aluminum
Intake Port Volume------------------------------------------------ 305cc
Intake Port Dimension------ 2.380” H x 1.680” W x 11/32° Radius
Intake Port Location------------------------------------------------ Stock
Exhaust Port Volume------------------------------------------------ 132cc
Exhaust Port Dimension------------------------- 1.720” H x 1.920” W
Exhaust Port Location-------------------------------------- .375” Raised
Combustion Chamber Size (As Cast)----------------------------- 117cc
Combustion Chamber Size (Full CNC)---------------------------- 121cc
Valve Cover Bolt Pattern-----------------------------------------Perimeter
Valve Angle----------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining--------------------- 1.750” O.D
Deck Thickness-------------------------------------------------------- .750”
Minimum Bore Diameter-------------------------------------------4.250”
Flat Mill-------------- .006” Per CC / Maximum 108cc As Cast or 114cc CNC Chamber
Angle Mill------------------- .009” Per CC / Maximum 104cc As Cast or CNC Chamber
N
ote: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------2.993 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat

Recommended Components:
take Port Gasket----- AFR #6855 $30.23 (.060” Thick) or AFR #6853 $50.80
(.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6858 $31.44
Head Gasket-------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts-------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs--------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------ AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)--------
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold--------------------------- Victor Jr or Super Victor
Spark Plug Starting Range-----------------------------------Autolite 3924

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.
holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
As cast w/ Partial CNC Porting
305cc CNC Bowl Blend & Partial Chamber 117cc 2100 $3,819.99
305cc CNC Bowl Blend & Fully CNC Chamber 121cc 2100-1 $4,119.35

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 28
315cc Rectangle Port “Magnum” BBC 24°
AFR’s Torque Monster



AFR’s 315cc heads feature 100% CNC ported intake, exhaust &
chambers, A356 aluminum castings and high quality components
throughout. Recommended for aggressive street, or street/strip builds
with displacements up to 540 cubic inches, operating up to 6800 $96.76
RPM. Component upgrades and machining options are available to
customize AFR Heads to your specific build (see pg. 47). To ensure
trouble free operation of AFR cylinder heads & parts please view the
footnotes on pg. 51 for additional information. AFR heads are available
bare (without parts), call our tech line for details.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.250 x 5.500 O.A.L. AFR #7620-1 $27.81
11/32 Nail Head Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7630-1 $27.81
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

315cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800
Int 169 249 312 353 380. 386 387
Exh 146. 184 238 271 296 310 315

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.600”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 315cc
Intake Port Dimension--------- 2.450” H x 1.755” W x 13/32° Radius
Intake Port Location--------------------------------------------------- Stock
Exhaust Port Volume-------------------------------------------------- 135cc
Exhaust Port Dimension--------------------------- 1.780” H x 2.025” W
Exhaust Port Location--------------------------------------- .375” Raised
Combustion Chamber Size (Full CNC)---------------------------- 121cc
Valve Cover Bolt Pattern-----------------------------------------Perimeter
Valve Angle----------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining--------------------- 1.750” O.D
Deck Thickness------------------------------------------------------- .750”
Minimum Bore Diameter--------------------------------------------4.250”
Flat Mill-------------------------------- .006” Per CC / Maximum 114cc
Angle Mill----------------------------- .009” Per CC / Maximum 104cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------3.151 sq. in.
Spark Plug Dimensions---------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket------- AFR #6855 $30.23 (.060” Thick) or
AFR #6853 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket-------------------------------------- AFR #6858 $31.44
Head Gasket--------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket-----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts--------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts-----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs---------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)-------------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)---
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------- Crower, Jesel Pro Series only,
T&D AFR #6065 $2,128.66
Suggested Manifold--------------------------- Victor Jr or Super Victor
Spark Plug Starting Range---------------- Autolite 3924 (Pump Gas) / 3922 (Race Gas)

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
315cc Fully CNC Ported 121cc 2000 $5,022.88

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 29
325cc Rectangle Port “Magnum” BBC 24°
AFR’s Best of Both Solution


AFR’s 325cc heads are designed feature partially CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for more aggressive street, or
street/strip builds with displacements up to 540 cubic inches, operating
up to 6800 $96.76 RPM. Also available with 100% CNC chambers for increased
air flow (see chart). Component upgrades and machining options are
available to customize AFR Heads to your specific build (see pg. 47).
To ensure trouble free operation of AFR cylinder heads & parts please
view the footnotes on pg. 51 for additional information. AFR heads are
available bare (without parts), call our tech line for details.

Included Components
Part #
50% CNC Ported Combustion Chambers  20% CNC Ported Exhaust Ports  30% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

325cc As Cast Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 150 220 286 337 372 385
Exh 131 176 214 248 270 280
325cc w/ 100% CNC Chamber Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 170 242 304 342 372 390
Exh 145. 195 244 266 274 280

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.310”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Partial CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 325cc
Intake Port Dimension-------------2.360” H x 1.685” W x 3/8° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume--------------------------------------------------- 132cc
Exhaust Port Dimension---------------------------- 1.720” H x 1.920” W
Exhaust Port Location---------------------------------------- .375” Raised
Combustion Chamber Size (As Cast)------------------------------- 117cc
Combustion Chamber Size (Full CNC)------------------------------ 121cc
Valve Cover Bolt Pattern------------------------------------------Perimeter
Valve Angle------------------------------------------ 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter-------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining----------------------- 1.750” O.D
Deck Thickness---------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------4.250”
Flat Mill----------- .006” Per CC / Maximum 108cc As Cast or
114cc CNC Chamber
Angle Mill------------------- .009” Per CC / Maximum 104cc As Cast or CNC Chamber
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area------------------------------3.111 sq. in.
Spark Plug Dimensions------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket--------------- AFR #6855 $30.23 (.060” Thick) or
AFR #6853 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------ AFR #6858 $31.44
Head Gasket------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket--------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts------------ ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts--------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers--------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)---------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)------
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold---------------------------- Victor Jr or Super Victor
Spark Plug Starting Range------------------------------------Autolite 3924

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
As cast w/ Partial CNC Porting
325cc CNC Bowl Blend & Partial Chamber 117cc 2101 $3,819.99
325cc CNC Bowl Blend & Fully CNC Chamber 121cc 2101-1 $4,119.35

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 30
335cc Rectangle Port “Magnum” BBC 24°
AFR’s Best of Both Solution



30 www.airflowresearch.com
Note: 1” longer head bolt needed on four bottom exhaust bolt holes.
AFR’s 335cc heads are designed feature 100% CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for radical street/strip or “Pro
Street” builds with displacements up to 572 cubic inches, operating
up to 7000 RPM. Component upgrades and machining options are
available to customize AFR Heads to your specific build (see pg. 47).
To ensure trouble free operation of AFR cylinder heads & parts please
view the footnotes on pg. 51 for additional information. AFR heads are
available bare (without parts), call our tech line for details.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

335cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800
Int 164 240 304 352 385 404 410
Exh 142. 193 244 278 310 321 327

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.600”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust


Specifications & Features:
Material---------------------------------------------------- A356 Aluminum
Intake Port Volume---------------------------------------------------- 335cc
Intake Port Dimension--------- 2.455” H x 1.755” W x 13/32° Radius
Intake Port Location--------------------------------------------------- Stock
Exhaust Port Volume--------------------------------------------------- 135cc
Exhaust Port Dimension---------------------------- 1.780” H x 2.025” W
Exhaust Port Location---------------------------------------- .375” Raised
Combustion Chamber Size (Full CNC)----------------------------- 121cc
Valve Cover Bolt Pattern------------------------------------------Perimeter
Valve Angle------------------------------------------ 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter-------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining---------------------- 1.750” O.D
Deck Thickness-------------------------------------------------------- .750”
Minimum Bore Diameter---------------------------------------------4.250”
Flat Mill-------------------------------- .006” Per CC / Maximum 114cc
Angle Mill----------------------------- .009” Per CC / Maximum 104cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------3.275 sq. in.
Spark Plug Dimensions---------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket--------- AFR #6855 $30.23 (.060” Thick) or
AFR #6853 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket--------------------------------------- AFR #6858 $31.44
Head Gasket---------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket------------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts---------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts------------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs----------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers-------------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)--------------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)----
AFR Part #6043 $532.16
Shaft Mount Rocker Arms----- Crower, Jesel Pro Series only,
T&D AFR #6065 $2,128.66
Suggested Manifold------------------------- Victor Jr or Super Victor
Spark Plug Starting -- Autolite 3924 (Pump Gas) / 3922 (Race Gas)

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
335cc Fully CNC Ported 121cc 2001 $5,022.88

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 31
345cc Rectangle Port “Magnum” BBC 24°
AFR’s Magnum Series


Note: 1” longer head bolt needed on four bottom exhaust bolt holes.
AFR’s 345cc heads are designed feature partially CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for more radical street/strip,
“Pro Street”, or racing builds with displacements up to 572 cubic
inches, operating up to 7000 RPM. Also available with 100% CNC
chambers for increased air flow (see chart). Component upgrades
and machining options are available to customize AFR Heads to
your specific build (see pg. 47). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Included Components
Part #
50% CNC Ported Combustion Chambers  20% CNC Ported Exhaust Ports  30% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

345cc As Cast Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 150 222 290 340 380. 401
Exh 131 171 210 244 267 280
345cc w/ 100% CNC Chamber Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700
Int 172 246 312 356 390 397
Exh 148 193 240 265 274 279

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.500; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Partial CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------ 345cc
Intake Port Dimension---------- 2.435” H x 1.765” W x 13/32° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume---------------------------------------------------- 132cc
Exhaust Port Dimension----------------------------- 1.720” H x 1.920” W
Exhaust Port Location----------------------------------------- .375” Raised
Combustion Chamber Size (As Cast)------------------------------- 117cc
Combustion Chamber Size (Full CNC)------------------------------ 121cc
Valve Cover Bolt Pattern-------------------------------------------Perimeter
Valve Angle------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter--------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining------------------------ 1.750” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------4.250”
Flat Mill-------------- .006” Per CC / Maximum 108cc As Cast or
114cc CNC Chamber
Angle Mill .009” Per CC / Maximum 104cc As Cast or CNC Chamber
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area------------------------------3.263 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket---- AFR #6856 $30.23 (.060” Thick) or
AFR #6854 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket-------------------------------------- AFR #6858 $31.44
Head Gasket-------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts-------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs--------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------ AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)-----
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold----------------------------- Victor Jr or Super Victor
Spark Plug Starting Range------------------------------------Autolite 3924

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
As cast w/ Partial CNC Porting
345cc CNC Bowl Blend & Partial Chamber 117cc 2110 $3,819.99
345cc CNC Bowl Blend & Fully CNC Chamber 121cc 2110-1 $4,119.35

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 32
357cc Rectangle Port “Magnum” BBC 24°
AFR’s Magnum Series



AFR’s 357cc heads feature 100% CNC ported intake, exhaust &
chambers, A356 aluminum castings and high quality components
throughout. Recommended for race applications or radical “Pro
Street” builds with displacements up to 605 cubic inches. Component
upgrades and machining options are available to customize AFR Heads
to your specific build (see pg. 47). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Titanium Retainers 1.500 O.D x 1.180 I.D x .765 I.D  AFR #8507-16 $290.28
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

357cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800
Int 167 242 307 354 393 415 425
Exh 142. 193 244 278 310 321 327

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.600”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 357cc
Intake Port Dimension------------ 2.515” H x 1.780” W x 11/32° Radius
Intake Port Location------------------------------------------------------ Stock
Exhaust Port Volume----------------------------------------------------- 135cc
Exhaust Port Dimension------------------------------- 1.780” H x 2.025” W
Exhaust Port Location------------------------------------------- .375” Raised
Combustion Chamber Size (Full CNC)-------------------------------- 121cc
Valve Cover Bolt Pattern---------------------------------------------Perimeter
Valve Angle--------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter----------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining-------------------------- 1.750” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------4.250”
Flat Mill------------------------------------- .006” Per CC / Maximum 114cc
Angle Mill---------------------------------- .009” Per CC / Maximum 104cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------3.435 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket------ AFR #6856 $30.23 (.060” Thick) or
AFR #6854 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6858 $31.44
Head Gasket------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket---------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts---------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs-------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------ AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)--------
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only, T&D AFR #6065 $2,128.66
Suggested Manifold------------------------------ Victor Jr or Super Victor
Spark Plug Starting Range Autolite 3924 (Pump Gas) / 3922 (Race Gas)

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
357cc Fully CNC Ported 121cc 2010TI $4,398.91

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 33
377cc Rectangle “Magnum” 24° BBC
AFR’s Magnum Series



Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.300 x 5.500 O.A.L. AFR #7626-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Titanium Retainers 1.500 O.D x 1.180 I.D x .765 I.D AFR #8507-16 $290.28
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79
11/32 Exhaust Bronze Valve Guides .502 O.D x 2.25 O.A.L AFR #9042-8 $125.79

377cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900
Int 176 260 328 382. 415 427 434 437
Exh 148 205 263 302 316 330 340 345

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.600”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 377cc
Intake Port Dimension------------ 2.450” H x 1.755” W x 13/32° Radius
Intake Port Location------------------------------------------------------ Stock
Exhaust Port Volume----------------------------------------------------- 135cc
Exhaust Port Dimension------------------------------ 1.780” H x 2.025” W
Exhaust Port Location------------------------------------------- .375” Raised
Combustion Chamber Size (Full CNC)-------------------------------- 121cc
Valve Cover Bolt Pattern--------------------------------------------Perimeter
Valve Angle-------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter----------------------------------- 1.725” O.D
Max Valve Spring Pocket Machining-------------------------- 1.750” O.D
Deck Thickness------------------------------------------------------------ .750”
Minimum Bore Diameter------------------------------------------------4.250”
Flat Mill------------------------------------- .006” Per CC / Maximum 114cc
Angle Mill---------------------------------- .009” Per CC / Maximum 104cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------------3.860 sq. in.
Spark Plug Dimensions----------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket--------------- AFR #6856 $30.23 (.060” Thick) or
AFR #6854 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------ AFR #6858 $31.44
Head Gasket-----------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket--------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts------------ ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts--------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------ AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)-------
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only,
T&D AFR #6065 $2,128.66
Suggested Manifold------------------------- Victor Jr or Super Victor
Spark Plug Starting Range---------------------------------Autolite 3932

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.


Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
377cc Fully CNC Ported 122cc 2015TI $4,532.56

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 34
385cc Rectangle “Magnum” 24° BBC
AFR’s Magnum Series



Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Intake Valve, 2.350 x 5.500 O.A.L. AFR #7627-1 $27.81
11/32 Tulip Exhaust Valve, 1.880 x 5.450 O.A.L. AFR #7631-1 $29.03
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring 275  lbs. on seat, .850 maximum lift  Max RPM 7400-7600 (upgrades available) AFR #8031-16 $365.74
10º Titanium Retainers 1.500 O.D x 1.180 I.D x .765 I.D AFR #8507-16 $290.28
10° 11/32 Valve Keepers with lashcap recess AFR #9005-16 $48.38
ARP 7/16 Rocker Studs Intake AFR #6407-8 $42.34
ARP 7/16 Rocker Studs Exhaust AFR #6406-8 $48.38
Adjustable 3/8 Guide Plates AFR #6109-8 $65.31
11/32 Viton Valve Seals AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D / 1.650 I.D AFR #8046-16 $77.40
Intake Valve Seats 2.450 O.D x 2.00 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 2.00 O.D x 1.580 I.D x .375 Deep AFR #9064 $13.30
11/32 Intake Bronze Valve Guides .502 O.D x 2.10 O.A.L AFR #9041-8 $125.79

385cc Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900
Int 176 256 327 386 421 444 452 456
Exh 149. 205 267 302 322 334 344 350

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.600”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Competition CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 385cc
Intake Port Dimension----------- 2.565” H x 1.810” W x 15/32° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------- 135cc
Exhaust Port Dimension------------------------------ 1.780” H x 2.025” W
Exhaust Port Location------------------------------------------ .375” Raised
Combustion Chamber Size (Full CNC)------------------------------- 121cc
Valve Cover Bolt Pattern--------------------------------------------Perimeter
Valve Angle-------------------------------------------- 24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter---------------------------------- 1.725” O.D
Max Valve Spring Pocket Machinin-------------------------- 1.750” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter------------------------------------------------4.250”
Flat Mill------------------------------------ .006” Per CC / Maximum 114cc
Angle Mill--------------------------------- .009” Per CC / Maximum 104cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------3.890 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket--------------- AFR #6856 $30.23 (.060” Thick) or
AFR #6854 $50.80 (.120” Thick)
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket--------------------------------------- AFR #6858 $31.44
Head Gasket--------------Felpro 1017-1 (Mark IV) or AFR #6850 $127.00
Head Gasket-----------Felpro 1047 (Mark V & VI) or AFR #6849 $127.00
Head Bolts--------------- ARP 135-3703 (Mark IV) or AFR #6306 $154.81
Head Bolts-----------------ARP 135-3707 (Mark V) or ARP #6308 $148.76
Head Studs---------------------------- ARP 235-4713 or AFR #6307 $296.33
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)-------------------------------- AFR #6202 $267.16
Stud Mount Rocker Arms (for optimized geometry)
AFR Part #6043 $532.16
Shaft Mount Rocker Arms-------------- Crower, Jesel Pro Series only,
T&D AFR #6065 $2,128.66
Suggested Manifold---------------------------- Victor Jr or Super Victor
Spark Plug Starting Range-----------------------------------Autolite 3932

Note: 1” longer head bolt needed
on four bottom exhaust bolt holes.


Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition Package Ported Heads
385cc Fully CNC Ported 121cc 2020TI $4,532.56

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov


Page 35
457cc Rectangle Port “Magnum” 18° BBC Head

AFR’s new 457cc 18° Big Block Chevy heads is our best performing
highest flowing head in our BB Chevy lineup. They come standard
with stainless steel 2.400 intake valves and 1.800 exhaust valves.
The intake port is raised .500 with the valves rolled to 18° resulting
in unparelled under the curve flow numbers..... don’t be fooled
by just peak flow numbers. The combustion chamber come in at
90cc. This head is ideal for 540CI or larger race engines. This head
requires specific pistons, valves covers, shaft mount rockers and
readily available intake manifolds. AFR offers a wide range of options
and upgrades for this head like titanium valves and Copper seats. To
ensure trouble free operation of AFR cylinder heads & parts please
view the footnotes on pg. 51 for additional information. AFR heads
are available bare (without parts), call our tech line for details.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5-Angle Valve Job
11/32" Bead Lock Stainless Steel Intake Valve,  2.400" X 6.035" O.A.L. AFR #7420-1 $30.24
11/32" Bead Lock Stainless Steel Exhaust Valve,  1.800" X 5.935" O.A.L. AFR #7422-1 $30.24
PAC Racing #1258 1.645 OD Solid Roller  Triple Spring, 350 lbs. on seat,  .950 maximum lift Max RPM 8300 to 8500 AFR #8014-16 $503.14
10° Titanium Retainer 1.500" O.D X1.180"I.D X .765" I.D AFR #8517-16 $348.33
10° 11/32" Bead Lock Valve Keepers with recess lashcaps AFR #9010 $48.50 16
11/32" Viton Valve Seal AFR #6613-16 $31.45
Hardened Spring Cup 1.740 O.D X 1.677 I.D X .570 AFR #9170 $4.84
Intake Valve Seats 2.500" O.D X 2.000" I.D X .375" Deep  AFR #9162 $13.30
Exhaust Valve Seats 1.900" O.D X 1.400" I.D X .375" Deep AFR #9066 $13.30
11/32" Bronze Valve Guides .502" O.D X 2.700 O.A.L. AFR #9055 $13.34

457cc Competition Flow Chart
. 0.20 0.30 0.40 0.50 0.60 0.700 0.800 0.900 1.00
Int 161 254 331 389 439 479 492 495 498
Exh 134 201 251 286 305 315 332 337 342

Test conducted at 28” of water (pressure) on Superflow 600
Bore Size: 4.625”, intake 3/4” radius plate , exhaust 2 1/8” curved pipe
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Competition CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------- 457cc
Intake Port Dimension------------ 2.490”H X 1.750” W X 1/2” Radius
Exhaust Port Volume---------------------------------------------------- 143cc
Exhaust Port Dimension-----------------------------1.850” H X 2.090” W
Exhaust Port Location---------------------------------------- .450 Raised
Combustion Chamber Size-----------------------------------------------90cc
Valve Cover Bolt Pattern------------------------------------------ Standard
Valve Angle------------------------------------------ 18°/4° Int, 11°/4° Exh
Valve Spring Pocket Diameter----------------------------------1.750” OD
Max Valve Spring Pocket Machining-------------------------1.750” OD
Warning: Do not machine spring pad any deeper.
Deck Thickness---------------------------------------------------- 0.75
Minimum Bore Diameter--------------------------------------------------- 4.6
Flat Mill---------------------------------------------------------------.005 Per cc
Angle Mill---------------------------------------------------------- .0066 Per cc
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------------3.699
Spark Plug Dimensions------------- 14mm X .750” W/ Tapered Seat

Recommended Components:
Intake Port Gasket----------------------------------------- AFR #6880 $30.24
Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.
Exhaust Port Gasket--------------------------------------- AFR #6858 $31.44
Head Gasket-------------------------- Fel Pro #1057 $2,755.29 Cometic C5434
12 pt Head Stud Kit------------------- ARP #135-4305 AFR #6345 $331.40
Suggested Manifold----------------------- 10.2” Block AFR #4901 $665.21
Suggested Manifold-------------------------9.8” Block AFR #4902 $659.16
Spark Plug Starting Range--------------------------------Autolite 3932
Shaft Mount Rockers------------------T&D or Jesel Pro Series only
Distributor Standard Deck---------------------------- MSD #84697 or 8489
Distributor Tall Deck----------------------------------- MSD #85561 or 8547


Pairs of Cylinder Heads
Runner  Size Description Combustion  Chamber Part #
As Cast w/ Partial CNC Porting
457cc Fully CNC Ported NO PARTS 90cc 3707 $3,169.78
457cc Fully CNC Ported With Parts 90cc 3708 $3,893.64
N/A Porters Casting With Seats & Guides N/A 3704 $1,913.80

Page 36
SMALL BLOCK FORD
165cc SBF “Renegade” 20° Street Head
The Small Port, High Velocity,
Emission Legal Torque Monster


AFR’s 165cc “Street” heads are the cost effective performance choice
over re-worked factory heads. They feature 100% CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout, in addition these are the only AFR heads that
are compatible with the OEM piston valve relief.* Recommended for
street, towing, or street/strip engines with displacements up to 351
cubic inches, operating up to 6000 RPM. Legal for 1995 and older
emissions controlled vehicles under CARB EO #D-250-3. Component
upgrade and machining options are available to customize AFR Heads
to your specific build (see pg. 45). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers,  100% CNC Ported Exhaust Ports,  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 1.900 x 4.900 O.A.L. AFR #7249-1 $19.35
8mm Bead Lock Exhaust Valve 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
Pedastal 8mm Bead Lock Intake Valve 1.900 x 5.080 O.A.L AFR #7262-1 $19.35
Pedastal 8mm Bead Lock Exhaust Valve 1.600 x 5.100 O.A.L AFR #7264-1 $19.35
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve Spring  140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Manley Steel Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 3/8 Rocker Studs AFR #6409-16 $68.94
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9060 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9070 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86
Thermactor Air Injector Reducer Bushing (5/8-11 x 7/16-14) AFR #6226 $19.35

165cc Street Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 135 200 240 251 255 260
Exh 122 163 192 208 212 215

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Street CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------------------- A356 Aluminum
Intake Port Volume---------------------------------------------------------------- 165cc
Intake Port Dimension------------------------2.060” H x 1.250” W x 3/8° Radius
Intake Port Location--------------------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------------------68cc
Exhaust Port Dimension------------------------------------------- 1.355” H x 1.360” W
Exhaust Port Location-------------------------------------------------------------- Stock
Combustion Chamber Size---------------------------------------------------------58cc
Valve Cover Bolt Pattern-------------------------------------------------------Perimeter
Valve Angle-------------------------------------------------------------------------- 20°
Valve Spring Pocket Diameter----------------------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining------------------------------------- 1.625” O.D
Deck Thickness-------------------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------------------- 4.00”
Flat Mill----------------------------------------------------------.006” per cc 54cc Max
Angle Mill--------------------------------------------------------.009” per cc 48cc Max
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------------------------1.935 sq. in.
Spark Plug Dimensions----------------------------------14mm x .750” w/ Gasket Seat
CARB EO#---------------------------------------------------------------------- D-250-3
Head Bolt Diameter 1402 $2,312.56 & 1472------------------------------------------------- 7/16”
Head Bolt Diameter 1399----------------------------------------------------------- 1/2”

Recommended Components:
Intake Port Gasket----------------------------------------------------------- AFR #6910 $28.11
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket--------------------------------------------- AFR #6915 $26.60
Head Gasket 302/351 Windsor, Fel-Pro #1011-1 or AFR #6808 $94.34
7/16” Head Bolts------------ ARP 154-3701 or AFR #6323 $73.78
7/16” Head Studs------------ ARP 254-4401 or AFR #6322 $181.43
1/2” Bolt - 7/16” Threa------ ARP 254-3708 or AFR #6319 $216.50
Head Bolt Washers------------------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)--------------------------------------- AFR #6207 $192.66
Manifold--------------------------------------------------- Performer or Performer RPM
Spark Plug Starting Range-------------------------------------------------Autolite 3924


Pairs of Cylinder Heads
Runner  Volume Stud or  Pedestal Combustion  Chamber Part #
CNC Street Porting - Emission Legal
165cc Stud 58cc 1402 $2,312.56
165cc Pedestal 58cc 1472 $2,312.56
CNC Street Porting - Non Emissions
165cc Stud 58cc 1399 $2,312.56
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 37
185cc SBF “Renegade” 20° Street Head
The Ultimate Bolt-On Emission
Legal Street/Strip Weapon


AFR’s 185cc “Street” heads feature 100% CNC ported intake, exhaust
& chambers, A356 aluminum castings and high quality components
throughout. Recommended for engines from 302-393 cubic inches,
operating up to 6000-6500 RPM. Legal for 1995 and older emissions
controlled vehicles under CARB EO #D-250-3. Not compatible with
OEM pistons. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers,  100% CNC Ported Exhaust Ports,  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.020 x 4.900 O.A.L. AFR #7251-1 $19.35
8mm Bead Lock Exhaust Valve 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
Pedastal 8mm Bead Lock Intake Valve 2.020 x 5.080 O.A.L AFR #7263-1 $19.35
Pedastal 8mm Bead Lock Exhaust Valve 1.600 x 5.100 O.A.L AFR #7264-1 $19.35
PAC Racing Springs 1.290 OD Hydraulic Roller Dual Valve Spring  140. lbs. on seat, .600 maximum lift  Max RPM 6300-6500 (upgrades available) AFR #8017-16 $309.63
7º Manley Steel Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 3/8 Rocker Studs AFR #6409-16 $68.94
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86
Thermactor Air Injector Reducer Bushing (5/8-11 x 7/16-14) AFR #6226 $19.35

185cc Street Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600
Int 142. 200 255 285 295 297
Exh 118 164 200 210 213 215

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Street CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------------------- A356 Aluminum
Intake Port Volume---------------------------------------------------------------- 185cc
Intake Port Dimension------------------------2.045” H x 1.205” W x 3/8° Radius
Intake Port Location--------------------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------------------70cc
Exhaust Port Dimension------------------------------------------- 1.355” H x 1.360” W
Exhaust Port Location-------------------------------------------------------------- Stock
Combustion Chamber Size------------------------------------------------ 58cc or 72cc
Valve Cover Bolt Pattern-------------------------------------------------------Perimeter
Valve Angle-------------------------------------------------------------------------- 20°
Valve Spring Pocket Diameter----------------------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining------------------------------------- 1.625” O.D
Deck Thickness-------------------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------------------4.000”
Flat Mill------------- .006” per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill---------- .009” per cc 48cc Max (from 58cc); 62cc Max (from 72cc);
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area------------------------------------------2.025 sq. in.
Spark Plug Dimensions-------------------------------14mm x .750” w/ Gasket Seat
CARB EO# (Emissions Legal Only)------------------------------------------ D-250-3
Head Bolt Diameter----------------------------------------------------------------- 1/2”

Recommended Components:
Intake Port Gasket------------------------------------------- AFR #6911 $27.80
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6915 $26.60
Head Gasket------- 302/351W, Fel-Pro #1011-1 or AFR #6808 $94.34
1/2” Head Bolts------------------- ARP 154-3603 or AFR #6318 $119.74
1/2” Head Studs------------------ ARP 254-4503 or AFR #6317 $276.96
1/2” Bolt - 7/16” Thread Head Bolts-------- 289/302W: ARP 254-3708
or AFR #6319 $216.50
Head Bolt Washers------------------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)--------------------------------------- AFR #6207 $192.66
Manifold------------------------------------------------ Performer or Performer RPM
Spark Plug Starting Range----------------------------------------------Autolite 3924


Pairs of Cylinder Heads
Runner  Volume Stud or  Pedestal Combustion  Chamber Part #
CNC Street Porting - Emission Legal
185cc Stud 58cc 1422 $2,312.56
185cc Pedestal 58cc 1492 $2,312.56
CNC Street Porting - Non Emissions
185cc Stud 72cc 1387 $2,312.56
185cc Stud 58cc 1388 $2,312.56
185cc Stud 72cc 1420 $2,312.56
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 38
195cc SBF “Renegade” 20° Competition Head
The Maximum Bolt-On Emission Legal
Street/Strip Weapon


AFR’s 195cc “Competition” heads feature 100% CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for displacements up to 408
cubic inches, operating up to 6500-6800 RPM. Not compatible with
OEM pistons. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers,  100% CNC Ported Exhaust Ports,  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.050 x 4.900 O.A.L. AFR #7252-1 $19.35
8mm Bead Lock Exhaust Valve 1.600 x 4.950 O.A.L. AFR #7250-1 $19.35
PAC Racing Springs 1.270 OD Hydraulic Roller Dual Valve Spring  155 lbs. on seat, .650 maximum lift  Max RPM 7000-7200 (upgrades available) AFR #8019-16 $352.00
7º Manley Steel Retainers 1.245 O.D x .885 I.D x .655 I.D AFR #8514-16 $58.05
7° Bead Locks Valve Keepers AFR #9007-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring O.D Locator 1.380 O.D x .570 I.D AFR #8042-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86
Thermactor Air Injector Reducer Bushing (5/8-11 x 7/16-14) AFR #6226 $19.35

195cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.650
Int 152 206 260 287 298 308 315
Exh 126 171 207 222 227 231 235

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Street CNC Chamber,
Intake, & Exhaust




Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 195cc
Intake Port Dimension---------- 2.060” H x 1.220” W x 11/32° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume-------------------------------------------------------70cc
Exhaust Port Dimension---------------------------- 1.405” H x 1.400” W
Exhaust Port Location------------------------------------------ Raised .125”
Combustion Chamber Size------------------------------------ 58cc or 72cc
Valve Cover Bolt Pattern-------------------------------------------Perimeter
Valve Angle------------------------------------------------------------------ 20°
Valve Spring Pocket Diameter--------------------------------- 1.460” O.D
Max Valve Spring Pocket Machining------------------------ 1.625” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------------------------------4.000”
Flat Mill .006” per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill .009” per cc 48cc Max (from 58cc); 62cc Max (from 72cc);
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------------2.075 sq. in.
Spark Plug Dimensions----------------------14mm x .750” w/ Gasket Seat
Head Bolt Diameter--------------------------------------------------------- 1/2”

Recommended Components:
Intake Port Gasket-------------------------------------- AFR #6911 $27.80
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket-------------------------------------- AFR #6916 $29.01
Head Gasket-------- 302/351W, Fel-Pro #1011-1 or AFR #6808 $94.34
1/2” Head Bolts--------------------- ARP 154-3603 or AFR #6318 $119.74
1/2” Head Studs--------------------- ARP 254-4503 or AFR #6317 $276.96
1/2” Bolt - 7/16” Thread Head Bolts-------- 289/302W: ARP 254-3708
or AFR #6319 $216.50
Head Bolt Washers-----------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)------------------------------- AFR #6207 $192.66
Manifold------------------------------------------- Performer RPM or Vic Jr.
Spark Plug Starting Range------------------------------------Autolite 3924


Pairs of Cylinder Heads
Runner
Volume
Stud or
Pedestal
Combustion
Chamber
Part #
CNC Competition Porting
195cc Stud 58cc 1426-716 $2,927.34
195cc Stud 72cc 1428-716 $2,927.34
CNC Competition Porting
195cc Stud 58cc 1381-716 $2,927.34
195cc Stud 72cc 1383-716 $2,927.34

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 39
205cc SBF “Renegade” 20° Competition Head
The Most Powerful Standard
Street/Strip Head Ever


AFR’s 205cc “Competition” heads feature 100% CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. Recommended for race applications and very
aggressive street/strip builds. Component upgrade and machining
options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information.

Included Components
Part #
100% CNC Ported Combustion Chambers,  100% CNC Ported Exhaust Ports,  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.080 x 5.000 O.A.L. AFR #7255-1 $24.19
8mm Bead Lock Exhaust Valve 1.600 x 5.030 O.A.L. AFR #7254-1 $24.19
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

205cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.550 0.600 0.700 0.750
Int 149. 205 260 291 302 315 327 331
Exh 126 170 210 219 227 231 234 235

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.060”; intake 3/4” radius plate exhaust 1 3/4” curved pipe

Street CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------ A356 Aluminum
Intake Port Volume---------------------------------------------------- 205cc
Intake Port Dimension-------------2.115” H x 1.300” W x 3/8° Radius
Intake Port Location--------------------------------------------------- Stock
Exhaust Port Volume-----------------------------------------------------70cc
Exhaust Port Dimension----------------------------- 1.400” H x 1.400” W
Exhaust Port Location---------------------------------------- Raised .125”
Combustion Chamber Size--------------------------------- 58cc or 72cc
Valve Cover Bolt Pattern----------------------------------------Perimeter
Valve Angle----------------------------------------------------------------- 20°
Valve Spring Pocket Diameter-------------------------------- 1.580” O.D
Max Valve Spring Pocket Machining----------------------- 1.625” O.D
Deck Thickness---------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------------------------------4.000”
Flat Mill--- .006” per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill- .009” per cc 48cc Max (from 58cc); 62cc Max (from 72cc);
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area---------------------------------2.165 sq. in.
Spark Plug Dimensions---------------------14mm x .750” w/ Gasket Seat
Head Bolt Diameter-------------------------------------------------------- 1/2”

Recommended Components:
Intake Port Gasket--------------------------------------- AFR #6911 $27.80
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket------------------------------------- AFR #6916 $29.01
Head Gasket-------- 302/351W, Fel-Pro #1011-1 or AFR #6808 $94.34
1/2” Head Bolts--------------------- ARP 154-3603 or AFR #6318 $119.74
1/2” Head Studs-------------------- ARP 254-4503 or AFR #6317 $276.96
1/2” Bolt - 7/16” Thread Head Bolts-------- 289/302W: ARP 254-3708
or AFR #6319 $216.50
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)----------------------------- AFR #6207 $192.66
Manifold--------------------------------------------------- Vic Jr. or Super Vic
Spark Plug Starting Rang (Pump gas) Autolite 3924 / (Race gas) 3922

Pairs of Cylinder Heads
Runner  Volume Rocker  Type Combustion  Chamber Part #
Competition CNC Ported Heads
205cc Stud 58cc 1450 $2,993.88
205cc Stud 72cc 1458 $2,993.88
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 40
220cc SBF “Renegade”20° Competition Head
The Best 20¢ª In-Line Head You Can Buy


AFR’s 220cc “Competition” heads feature 100% CNC ported intake,
exhaust & chambers, A356 aluminum castings and high quality
components throughout. This is AFR’s largest, best flowing head for
the small block Ford. Recommended for race applications or radical
“Pro Street” style builds. Component upgrade and machining options
are available to customize AFR Heads to your specific build (see pg.
47). To ensure trouble free operation of AFR cylinder heads & parts
please view the footnotes on pg. 51 for additional information. AFR
heads are available bare (without parts), call our tech line for details.

Included Components
Part #
100% CNC Ported Combustion Chambers,  100% CNC Ported Exhaust Ports,  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
8mm Bead Lock Intake Valve 2.100 x 5.000 O.A.L. AFR #7256-1 $24.19
8mm Bead Lock Exhaust Valve 1.570 x 5.030 O.A.L. AFR #7248-1 $24.19
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .710 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° Bead Lock Valve Keepers with lashcap recess AFR #9009-16 $48.38
ARP 7/16 Rocker Studs AFR #6405-16 $100.39
Adjustable 5/16 Guide Plates AFR #6103-8 $42.34
Viton Valve Seals .600 O.D x .495 I.D AFR #6612-16 $17.41
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Ductile Iron Intake Valve Seats 2.131 O.D x 1.680 I.D x .375 Deep AFR #9059 $13.30
Ductile Iron Exhaust Valve Seats 1.650 O.D x 1.350 I.D x .375 Deep AFR #9069 $13.30
8 mm Bronze Valve Guides .502 O.D x 2.100 O.A.L AFR #9051-16 $212.86

220cc Competition Head Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.700 0.800
Int 149. 205 264 296 318 334 338
Exh 126 173 220 246 251 255 258

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.155”; intake 3/4” radius plate exhaust 1 7/8” curved pipe

Street CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------- A356 Aluminum
Intake Port Volume------------------------------------------------------ 220cc
Intake Port Dimension--------------2.265” H x 1.325” W x 3/8° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume------------------------------------------------------70cc
Exhaust Port Dimension---------------------------- 1.445” H x 1.595” W
Exhaust Port Location---------------------------------------- Raised .375”
Combustion Chamber Size----------------------------------- 58cc or 72cc
Valve Cover Bolt Pattern------------------------------------------Perimeter
Valve Angle------------------------------------------------------------------ 20°
Valve Spring Pocket Diameter--------------------------------- 1.580” O.D
Max Valve Spring Pocket Machining----------------------- 1.580” O.D
Deck Thickness----------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------- 4.00”
Flat Mill .006” per cc 55cc Max (from 58cc); 69cc Max (from 72cc);
Angle Mill .009” per cc 52cc Max (from 58cc); 66cc Max (from 72cc);
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------2.345 sq. in.
Spark Plug Dimensions--------------------14mm x .750” w/ Gasket Seat
Head Bolt Diameter--------------------------------------------------------- 1/2”

Recommended Components:
Intake Port Gasket------------------------------------- AFR #6912 $22.96
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket--------------Fel-Pro #1487 or AFR #6839 $32.65
Head Gasket------ 302/351W, Fel-Pro #1011-1 or AFR #6808 $94.34
1/2” Head Bolts------------------- ARP 154-3603 or AFR #6318 $119.74
1/2” Head Studs------------------- ARP 254-4503 or AFR #6317 $276.96
1/2” Bolt - 7/16” Thread Head Bolts-------- 289/302W: ARP 254-3708
or AFR #6319 $216.50
Head Bolt Washers--------------------------Manley, AFR #6320 $20.56
Stud Girdle (AFR Specific)---------------------------- AFR #6207 $192.66
Manifold--------------------------------------------- Vic Jr. or Super Victor
Spark Plug Starting Range (Pump gas) Autolite 3924 / (Race gas) 3922

Pairs of Cylinder Heads
Runner  Volume Rocker  Type Combustion  Chamber Part #
Competition CNC Ported Heads
220cc Stud 58cc 1451 $3,123.81
220cc Stud 72cc 1456 $3,123.81

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 41
280cc “Bullitt” BBF 14° Street Head
Small Port, High Torque Street/Strip Heads


AFR’s 280cc heads feature partially CNC ported intake, exhaust &
chambers, A356 aluminum castings and high quality components
throughout with standard exhaust port locations. Recommended
for street, towing, or street/strip engines with displacements up to
477 cubic inches, operating up to 6200 $174.71 RPM. Component upgrades
and machining options are available to customize AFR Heads to
your specific build (see pg. 47). To ensure trouble free operation of
AFR cylinder heads & parts please view the footnotes on pg. 51 for
additional information.

Please note that due to AFR’s valve angle and location, custom pistonsor notching your existing pistons will be required.

Included Components
Part #
50% CNC Ported Combustion Chambers  80% CNC Bowl Blend Intake & Exhaust  Competition 5 Angle Valve Job
11/32 Bead Lock Intake Valve 2.250 x 5.245 O.A.L. AFR #7551-1 $27.81
11/32 Bead Lock Tulip Exhaust Valve, 1.760 x 5.050 O.A.L. AFR #7553-1 $27.81
PAC Racing Springs 1.550 OD Solid Roller Dual Valve Drag Race  Spring 220 lbs. on seat, .680 maximum lift  Max RPM 7200-7400 (upgrades available) AFR #8000-16 $298.98
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift  Max RPM 6500-6700 AFR#8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Beadlock Valve Keepers with lashcap recess AFR #9010 $48.50
ARP 7/16 Rocker Studs AFR #6407-8 $42.34
Adjustable 3/8 Guide Plates AFR #6108-8 $65.31
11/32 Viton Valve Seals AFR #6610-16
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 1.900 O.D x 1.400 I.D x .375 Deep AFR #9066 $13.30
11/32 Bronze Valve Guides .502 O.D x 2.250 O.A.L AFR #9042-8 $125.79
280cc Partial CNC Flow Chart
. 0.200 0.300 0.400 0.500 0.600
Int 169 244 309 354 385
Exh 130 174 214 238 254
           

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.380”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Street CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material------------------------------------------------------ A356 Aluminum
Intake Port Volume------------------------------------------------------ 280cc
Intake Port Dimension------------ 2.230” H x 1.815” W x .525° Radius
Intake Port Location----------------------------------------------------- Stock
Exhaust Port Volume----------------------------------------------------- 132cc
Exhaust Port Dimension----------------------------- 1.830” H x 1.600” W
Exhaust Port Location-------------------------------------------------- Stock
Combustion Chamber Size----------------------------------- 75cc or 85cc
Valve Cover Bolt Pattern------------------------------------------Perimeter
Valve Angle 14° Intake/ 8° Exhaust, cant 4.04 Intake/ 4.12 Exhaust
Valve Spring Pocket Diameter--------------------------------- 1.750” O.D
Max Valve Spring Pocket Machining------------------------ 1.750” O.D
Deck Thickness---------------------------------------------------------- .750”
Minimum Bore Diameter----------------------------------------------4.360”
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------3.225 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket-------------------------------------- AFR # 6893 $25.40
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket ----------------Fel Pro # 1420, AFR # 6891 $32.65
Head Gasket----------- 4.500 Bore, Fel Pro #1018, AFR # 6892 $94.34
Head Bolts -------------------------- ARP# 155-3603, AFR# 6340 $238.25
Head Studs ---------------ARP# 155-4203 12 Point, AFR# 6341 $399.13
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle------------------------------------------------ AFR# 6209 $228.85
Shaft Mount Rocker Arms------------------- T&D AFR #6067 $2,128.66
Suggested Manifolds:
AFR Single Plane, AFR# 4992 $510.40 or #4993 $539.43
Spark Plug Starting Range (Pump gas) Autolite 3924 / (Race gas) 3922


Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part  #
CNC Partial Porting
280cc CNC bowl & Partial CNC chamber w/  Hydraulic Roller Springs 78cc 3802 $2,857.69
280cc CNC bowl & Partial CNC chamber w/  Solid Roller Springs 78cc 3803 $2,984.78
280cc CNC bowl & Partial CNC chamber w/  Hydraulic Roller Springs 85cc 3805 $2,857.69
280cc CNC bowl & Partial CNC chamber w/  Solid Roller Springs 85cc 3806 $2,984.78
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 42
295cc “Bullitt” BBF 14°
Aggressive Street/Strip Performance Heads


AFR’s 295cc heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout with standard or .250” raised exhaust port locations. Recommended for more aggressive street/strip or racing builds with displacements up to 512 cubic inches, operating up to 6500 RPM.
Component upgrades and machining options are available to customize AFR Heads to your specific build (see pg. 47). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 51 for additional information. AFR heads are available bare (without parts), call our tech line for details.

Please note that due to AFR’s valve angle and location, custom pistons or notching your existing pistons will be required.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Bead Lock Intake Valve 2.250 x 5.245 O.A.L. AFR #7551-1 $27.81
11/32 Bead Lock Tulip Exhaust Valve, 1.760 x 5.050 O.A.L. AFR #7553-1 $27.81
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring  275 lbs. on seat, .850 maximum lift, Max RPM 7400-7600  Uses #8518 $4.85 Steel Retainer & #8046 $4.85 Spring Cup (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift, Max RPM 6500-6700;  Uses #8511 $3.64 Steel Retainer AFR #8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Beadlock Valve Keepers with lashcap recess AFR #9010 $48.50
ARP 7/16 Rocker Studs AFR #6407-8 $42.34
Adjustable 3/8 Guide Plates AFR #6108 $65.48
11/32 Viton Valve Seals AFR #6610-16
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 1.900 O.D x 1.400 I.D x .375 Deep AFR #9066 $13.30
11/32 Bronze Valve Guides .502 O.D x 2.250 O.A.L AFR #9042-8 $125.79

295cc w/ Stock Exhaust
Race Ready Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.650 0.700
Int 168 245 313 357 396 404 411
Exh 128 171 215 247 267 273 276
295cc w/ .250 Raised Exhaust
Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.650 0.700
Int 168 245 313 357 396 404 411
Exh 127 172 218 252 274 279 284

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.380”; intake 3/4” radius plate exhaust 2 1/8” curved pipe


Street CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 315cc
Intake Port Dimension----------- 2.275” H x 1.850” W x .575° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume--------------------------------------------------- 142cc
Exhaust Port Dimension---------------------------- 1.850” H x 1.600” W
Exhaust Port Location----------------------------------------- .250” Raised
Combustion Chamber Size------------------------------------ 75cc or 85cc
Valve Cover Bolt Pattern-------------------------------------------Perimeter
Valve Angle-- 14° Intake/ 8° Exhaust, cant 4.04 Intake/ 4.12 Exhaust
Valve Spring Pocket Diameter---------------------------------- 1.750” O.D
Max Valve Spring Pocket Machining-------------------------- 1.750” O.D
Deck Thickness------------------------------------------------------------ .750”
Minimum Bore Diameter--------------------------------------------4.360”
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area-------------------------------3.440 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket-------------------------------------- AFR # 6893 $25.40
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket -----------------Fel Pro # 1420, AFR # 6891 $32.65
Head Gasket------------ 4.500 Bore, Fel Pro #1018, AFR # 6892 $94.34
Head Bolts -------------------------- ARP# 155-3603, AFR# 6340 $238.25
Head Studs ---------------ARP# 155-4203 12 Point, AFR# 6341 $399.13
Head Bolt Washers---------------------------Manley, AFR #6320 $20.56
Stud Girdle------------------------------------------------- AFR# 6209 $228.85
Shaft Mount Rocker Arms---------------------- T&D AFR #6067 $2,128.66
Suggested Manifolds AFR Single Plane, AFR #4992 $510.40
or #4993 $539.43
Spark Plug Starting Range Pump gas) Autolite 3924 / (Race gas) 3922


Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Race Ready CNC Ported Heads - Stock Exhaust
295cc Hydraulic Roller 75cc 3816 $3,396.90
295cc Solid Roller 75cc 3817 $3,507.95
295cc Hydraulic Roller 85cc 3819 $3,396.90
295cc Solid Roller 85cc 3820 $3,507.95
Competition CNC Ported Heads - .250 Raised Exh
295cc Hydraulic Roller 75cc 3822 $3,653.55
295cc Solid Roller 75cc 3823 $3,767.06
295cc Hydraulic Roller 85cc 3825 $3,653.55
295cc Solid Roller 85cc 3826 $3,767.06
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 43
315cc “Bullitt” BBF 14°
The Ultimate BBF Race Heads



The 315cc heads are AFR’s largest and best flowing BBF heads!
They feature 100% CNC ported intake, exhaust & chambers, A356
aluminum castings, and high quality components throughout with
.250” raised exhaust port location. These heads are best suited for
large displacement high RPM Big Block Ford racing engines or radical
“Pro Street” style builds. Component upgrades and machining options
are available to customize AFR Heads to your specific build (see pg.
47). To ensure trouble free operation of AFR cylinder heads & parts
please view the footnotes on pg. 51 for additional information. AFR
heads are available bare (without parts), call our tech line for details.

Please note that due to AFR’s valve angle and location, custom pistons or notching your existing pistons will be required.

Included Components
Part #
100% CNC Ported Combustion Chambers  100% CNC Ported Exhaust Ports  100% CNC Ported Intake Ports  Competition 5 Angle Valve Job
11/32 Bead Lock Intake Valve 2.300 x 5.245 O.A.L. AFR #7552-1 $27.81
11/32 Bead Lock Tulip Exhaust Valve, 1.760 x 5.050 O.A.L. AFR #7553-1 $27.81
PAC Racing #1224 1.625 OD Solid Roller Dual Valve Spring  275 lbs. on seat, .850 maximum lift, Max RPM 7400-7600  Uses #8518 $4.85 Steel Retainer & #8046 $4.85 Spring Cup (upgrades available) AFR #8031-16 $365.74
10º Manley Steel Retainers 1.500 O.D x 1.168 I.D x .844 I.D AFR #8518-16 $77.40
PAC Racing #1940 1.550 OD Hydraulic Roller Dual Valve Spring  175 lbs. on seat, .725 maximum lift, Max RPM 6500-6700;  Uses #8511 $3.64 Steel Retainer AFR #8002-16 $298.98
10º Manley Steel Retainers 1.500 O.D x 1.120 I.D x .705 I.D AFR #8511-16 $58.05
10° 11/32 Beadlock Valve Keepers with lashcap recess AFR #9010 $48.50
ARP 7/16 Rocker Studs AFR #6407-8 $42.34
Adjustable 3/8 Guide Plates AFR #6108 $65.48
11/32 Viton Valve Seals AFR #6610-16
Hardened Valve Spring I.D Locator 1.550 O.D x .780 I.D AFR #8048-16 $77.40
Intake Valve Seats 2.450 O.D x 1.950 I.D x .375 Deep AFR #9065 $13.30
Exhaust Valve Seats 1.900 O.D x 1.400 I.D x .375 Deep AFR #9066 $13.30
11/32 Bronze Valve Guides .502 O.D x 2.250 O.A.L AFR #9042-8 $125.79

315 w/ .250 Raised Exh Competition Flow Chart
. 0.200 0.300 0.400 0.500 0.600 0.650 0.700 0.750
Int 162 241 309 360. 405 415 423 427
Exh 127 172 218 252 274 279 284 284

Test conducted at 28” of water (pressure) on Superflow 600
Bore size: 4.380”; intake 3/4” radius plate exhaust 2 1/8” curved pipe

Street CNC Chamber,
Intake, & Exhaust



Specifications & Features:
Material----------------------------------------------------- A356 Aluminum
Intake Port Volume----------------------------------------------------- 295cc
Intake Port Dimension----------- 2.275” H x 1.850” W x .575° Radius
Intake Port Location---------------------------------------------------- Stock
Exhaust Port Volume--------------------------------------------------- 142cc
Exhaust Port Dimension---------------------------- 1.850” H x 1.600” W
Exhaust Port Location-----------------------------Stock or .250” Raised
Combustion Chamber Size----------------------------------- 75cc or 85cc
Valve Cover Bolt Pattern--------------------------------------Perimeter
Valve Angle 14° Intake/ 8° Exhaust, cant 4.04 Intake/ 4.12 Exhaust
Valve Spring Pocket Diameter--------------------------------- 1.750” O.D
Max Valve Spring Pocket Machining------------------------ 1.750” O.D
Deck Thickness---------------------------------------------------------- .750”
Minimum Bore Diameter-----------------------------------------------4.360”
Note: Angle mills might require a .120” thick intake gasket.
Minimum Cross Sectional Area--------------------------------3.275 sq. in.
Spark Plug Dimensions-------------------14mm x .750” w/ Gasket Seat

Recommended Components:
Intake Port Gasket------------------------------------ AFR # 6893 $25.40
Important: Do not port match your intake manifold to Fel-Pro intake
gaskets as it might not precisely fit AFR heads. See picture on page 6.

Exhaust Port Gasket ---------------Fel Pro # 1420, AFR # 6891 $32.65
Head Gasket---------- 4.500 Bore, Fel Pro #1018, AFR # 6892 $94.34
Head Bolts ------------------------- ARP# 155-3603, AFR# 6340 $238.25
Head Studs --------------ARP# 155-4203 12 Point, AFR# 6341 $399.13
Head Bolt Washers--------------------------Manley, AFR #6320 $20.56
Stud Girdle------------------------------------------------ AFR# 6209 $228.85
Shaft Mount Rocker Arms--------------------- T&D AFR #6067 $2,128.66
Suggested Manifolds AFR Single Plane, AFR# 4992 $510.40
or #4993 $539.43
Spark Plug Starting Range (Pump gas) Autolite 3924 / (Race gas) 3922

Pairs of Cylinder Heads
Runner  Volume Description Combustion  Chamber Part #
Competition CNC Ported Heads - .250 Raised Exh
315cc Hydraulic Roller 75cc 3834 $3,674.11
315cc Solid Roller 75cc 3835 $3,784.33
315cc Hydraulic Roller 85cc 3837 $3,674.11
315cc Solid Roller 85cc 3838 $3,784.33
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

PARTS
Page 44
Aluminum Manifolds
AFR is excited to announce their new line of aluminum manifolds. We’re starting out by pairing our new BBF and BBC 18° Cylinder Heads with custom designed manifolds to ensure you get the most out of your AFR Cylinder Heads.


BB Ford Manifolds

*AFR 4992 $510.40 4150 Carb.
Carb Height 6.300 Fits AFR gasket #6893 $25.40


AFR 4993 $539.43 Dominator 4500 $202.49 Carb.
Carb Height 6.300 Fits AFR gasket #6893 $25.40
SB Chevy Manifolds

*AFR #4810 $448.71 Single Plane Carb Height 4.580”


*AFR #4811 $466.85 Single Plane Carb Height 5.500”

BB Chevy 18* Manifolds

*AFR #4901 $665.21 Carb Height 8.65
Tall Deck 10.2 Block


*AFR #4902 $659.16 Carb Height 8.37
Standard Deck 9.8 Block
SB Ford Manifolds

*AFR #4830 $451.14 Single Plane Carb
Height 5.43


*AFR #4812 $361.63 Dual Plane Carb
Height 4.720

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 45
Valves

AFR offers a complete selection of high quality stainless steel
21-4N valves to suit virtually any application. For the street,
AFR’s superb 1-piece, swirl polished valves with chromed
stems offer long life and great flow characteristics to help your
ride be the killer machine it should be. For racing use, AFR’s
premium stainless steel 21-4N, 1-piece, swirl polished valves
with chromed stems are the perfect choice. If ultra-high RPM
is your goal, you should consider AFR’s lightweight titanium
valves which help reduce valve float and improve valvetrain
stability for more power.

Titanium Valves *
Description Part Number
Ferrea Titanium Valve, 1.880 + .100 w/ Tip 7500-1 $223.75
Ferrea Titanium Valve, 2.250 + .250 w/ Tip 7501-1 $221.34
Ferrea Titanium Valve, 2.300 + .250 w/ Tip 7502-1 $221.34

* 8MM Valves
Description Part Number 
SBC/SBF 8mm 1.600 Street Exhaust Valve --------------------------------------- 7250-1 $19.35
SBC/SBF 8mm 2.020 Street Intake Valve ----------------------------------------- 7251-1 $19.35
SBC/SBF 8mm 2.050 Street Intake Valve ----------------------------------------- 7252-1 $19.35
SBC/SBF 8mm 1.600 X .100L Race Exhaust Valve ------------------------------- 7254-1 $24.19
SBC/SBF 8mm 2.080 X .100L Race Intake Valve --------------------------------- 7255-1 $24.19
SBC/SBF 8mm 2.100 X .100L Race Intake Valve --------------------------------- 7256-1 $24.19
SBC/SBF 8mm 2.020 X .100L Race Intake Valve --------------------------------- 7257-1 $24.19
SBC/SBF 8mm 2.050 X .100L Race Intake Valve --------------------------------- 7258-1 $24.19
SBC/SBF 8mm 2.080 Race Intake Valve ------------------------------------------ 7259-1 $24.19
SBC/SBF 8mm 1.600 X .100L Inconel Exhaust Valve ----------------------------- 7260-1 $53.21

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

11/32 Stainless Steel, 1-Piece, Swirl Polished *
Street Valves With Chromed Stems
Description Part Number 
Chevy Small Block, 1.600, Std. Length, AFR Custom ---------------------------- 7219 $24.19
Chevy Small Block, 1.600, Stock Length ---------------------------------------- 7220 $24.19
Chevy Small Block, 1.600, .100 Over Stock Length ---------------------------- 7225
Chevy Small Block, 2.020, Stock Length ---------------------------------------- 7204 $19.35

11/32 Stainless Steel, 1-Piece, Swirl Polished *
High Performance Valves With Chromed Stems
Description Part Number 
Chevy Small Block, 1.600, .050 Over Stock Length ---------------------------- 7057-1
Chevy Small Block, 1.600, .100 Over Stock Length ---------------------------- 7056-1
Chevy Small Block, 1.600, .200 Over Stock Length ---------------------------- 7058-1
Chevy Small Block, 2.020, .050 Over Stock Length ---------------------------- 7002-1
Chevy Small Block, 2.020, .100 Over Stock Length ---------------------------- 7006-1
Chevy Small Block 2.080, .050 Over Stock Length ---------------------------- 7018 $32.74
Chevy Small Block, 2.080, .100 Over Stock Length ---------------------------- 7026 $32.74
Chevy Small Block, 2.100, .050 Over Stock Length ---------------------------- 7031-1
Chevy Small Block, 2.100, .100 Over Stock Length ---------------------------- 7037-1
Chevy Big Block, 1.880, 11/32 Stem, +.100 Long ---------------------------- 7630-1 $27.81
Chevy Big Block, 2.190, 11/32 Stem, Stock Length ---------------------------- 7601-1 $27.81
Chevy Big Block, 2.250, 11/32 Stem, +.250 Long ---------------------------- 7620-1 $27.81
Chevy Big Block, 2.300, 11/32 Stem, +.250 Long ---------------------------- 7626-1 $27.81

Page 46

Cylinder Head and Valvetrain Components
 



Valve Seals *
Description Part Number
AFR Rubber Valve Stem Seal, .530 x 11/32 (BBC & BBF 2016 and older) ----- 6611-16 $31.45
AFR 8mm Valve Stem Seal 6612-16 $17.41
AFR 11/32 Viton Valve Stem Seal (BBC/BBF 2017 - present) --------------------- 6613-16 $31.45

Retainers *
Description Part Number
CHE 10º Titanium Retainer, 1.550 O.D ------------------------------------------- 8505-16 $290.28
Manley 10º Chrome Moly Retainer, 1.450 O.D ---------------------------------- 8510-16 $58.05
Manley 7º Chrome Moly Retainer, 1.250 O.D ------------------------------------ 8514-16 $58.05
Manley 10º Chrome Moly Retainer, 1.550 O.D ---------------------------------- 8511-16 $58.05

Valve Locks *
Description Part Number 
AFR 10º Valve Locks, 11/32 standard, set of 16 --------------------------------- 9005-16 $48.38
AFR 7º Valve Locks, 8mm - Bead Lock Style -------------------------- 9007-16 $48.38
AFR 10º Valve Locks, 8mm - Bead Lock Style ------------------------------ 9009-16 $48.38

Lash Caps *
 
Description Part Number 
AFR Lash Cap, 11/32 6608-16 $59.26
AFR Lash Cap, 8mm  6609-16 $59.26

AFR Hydraulic
Valve Springs


AFR
Roller
Valve Springs

Valve Seats and Guides *
Description Part Number
AFR Ductile Iron Intake Valve Seat, 2.200 O.D ----------------------------------- 9060 $13.30
AFR Ductile Iron Oversize Intake Valve Seat, +.010 ------------------------------ 9065 $13.30
AFR Ductile Iron Intake Valve Seat, Big Block Chevy ----------------------------- 9062 $13.30
AFR Ductile Iron Exhaust Valve Seat, 1.695 O.D --------------------------------- 9070 $13.30
AFR Ductile Iron Oversize Exhaust Valve Seat, +.010 ---------------------------- 9066 $13.30
AFR Bronze Valve Guide, .502 O.D 9050-1
AFR Bronze Valve Guide, .505 O.D 9056 $13.30
AFR Bronze Big Block Valve Guide, .545 O.D 9055-1 $15.73

AFR Titanium Retainers and Locks

AFR 4140 Chrome Moly Steel Retainers
and Locks



Valve Springs *
Our supplied Valve Springs are wound with the finest quality spring steel to provide all the muscle you need to control those wild cam profles.
Description Part Number
PAC Solid Roller Lifter Spring, 1.550 -------------------------------------------- 8000-16 $298.98
PAC 1225 Solid Roller Lifter Spring, 1.550 -------------------------------------- 8001-16 $425.74
PAC 1940 Hydraulic Roller Lifter Spring, 1.550---------------------------------- 8002-16 $298.98
Pioneer Solid Flat Tappet Spring, 1.550 ----------------------------------------- 8016-16 $348.33
PAC Hydraulic Roller Lifter Spring, 1.290---------------------------------------- 8017-16 $309.63
PAC Hydraulic Roller Lifter Spring, 1.270---------------------------------------- 8019-16 $352.00
PAC 1224 Solid Roller Lifter Spring, 1.625 -------------------------------------- 8031-16 $365.74



WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 47

Cylinder Head and Valvetrain Components
AFR Roller Rockers

* Rocker Studs
Description Part Number 
ARP Rocker Studs, 3/8, set of 16, ARP #134-7104 6409-1 $5.30
ARP Rocker Studs, 7/16, set of 16, ARP #234-7206 6405-1 $9.19

Rocker Arms *
Description Part Number
High quality rocker arms can help you get the power, control, and reliability that you need from your valvetrain. .
Scorpion Roller Rockers, 3/8x1.5, set of 16 ------------------------------------- 6025 $374.94
Scorpion Roller Rockers, 3/8x1.6, set of 16 ------------------------------------- 6026 $374.94
Scorpion Roller Rockers, 7/16x1.5, set of 16 ------------------------------------ 6027 $374.94
Scorpion Roller Rockers, 7/16x1.6, set of 16 - - 6028 $374.94
AFR BB Chevy HS Rocker Arms, 7/16 X 1.7 (Max lift .790, 7400 RPM & 760 lbs open pressure) 6043 $532.16
T&D SBC 227 - 245cc Shaft Mount Rocker, .450 Offset, 1.5 - 1.5 Ratio --------- 6062 $1,855.33
T&D SBC 227 - 245cc Shaft Mount Rocker, .450 Offset, 1.6 - 1.6 Ratio --------- 6063 $1,855.33
T&D SBC 245cc Shaft Mount Rocker, .550 Offset, 1.6 - 1.6 Ratio --------------- 6064 $1,855.33
T&D BBC 265 - 385cc Shaft Mount Rocker, 1.7 - 1.7 Ratio ---------------------- 6065 $2,128.66
T&D BBF 280 - 315cc Shaft Mount Rocker, 1.75 - 1.75 Ratio ------------------- 6067 $2,128.66

AFR Stud Girdle and Adjusting Nuts

Stud Girdles *
Description Part Number
AFR Chevy Small Block Eliminator Stud Girdle Bars, Standard, Pair -------------- 6200 $174.71
AFR Big Block Chevy Stud Girdle 2013+ (V-2 head) 6202 $267.16
AFR Chevy Small Block Eliminator Stud Girdle Bars, Offset, Pair ----------------- 6208 $192.66
AFR Stud Girdle Adjusting Nuts, 3/8, set of 16 6216-1 $10.89
AFR Stud Girdle Adjusting Nuts, 7/16, set of 16 6214-1 $10.89
AFR Small Block Ford Stud Girdle 6207 $192.66
AFR Big Block Ford Stud Girdle 6209 $228.85
AFR Big Block Chevy Stud Girdle (2006 to 2012)--------------------------------- 6210-16
SBC/SBF 3/8 Adjusting Nut 6216-16 $119.74
AFR BBC 7/16 Adjusting Nut (2.600 O.A.L) 6215-16
AFR SBC/SBF/BBC/BBF 7/16 Adjusting Nut (2.000 O.A.L) ---------------------- 6214-16 $119.74
AFR BBF 7/16 Adjusting Nut (2.200 O.A.L) 6213-16

Guide Plates *
Description Part Number 
AFR SBC/SBF 5/16 Adjustable Guide Plate, set of 8 -----------------------------  6103-1 $7.41
AFR BBF 3/8 Adjustable Guide Plate, set of 8 ----------------------------------- 6108-1 $11.43
AFR BBC 3/8 Adjustable Guide Plate, set of 8 ----------------------------------- 6109-1 $11.43



Cylinder Head Machining Options and Component Upgrades

Machining Options
Description Part Number
Machine for Stahl Exhaust bolt pattern ------------------------------------------- 4027 $60.48
Machine Steam holes for factory GM 400 Block --------------------------------- 4028 $90.71
Hard Anodized for marine applications ------------------------------------------- 4029
Angle Mill heads and correct intake surface (SBC/SBF/BBC/BBF) ---------------- 4038 $314.46
Flat Mill heads (LSX/BBC) 4039 $188.68
Flat Mill Heads and correct intake surface SBC/SBF ----------------------------- 4040 $188.68
Machine SBC for Centerbolt Valve covers 4057 $60.48

*Installation hardware may vary and machining may be required.
|

Component Upgrades 
Description Part Number

*All Products
Upgrade from ARP 3/8 to ARP 7/16 rocker studs --------------------------------- 6411 $53.21

*180cc/195cc SBC & 165cc/185cc SBF
8017. spring upgrade to higher lift/rpm 8019 $20.61 hydraulic roller spring ------------- 8605 $113.21
8017. spring exchange for 8020 $14.55 hydraulic flat tappet --------------------------- 8064 $15.75 * 

*210cc-245cc SBC & 205cc/220cc SBF
8000 $18.19 Solid roller spring upgrade to high lift/rpm 8001 $26.68 solid roller spring -------- 8027 $205.61
8000 $18.19 solid roller spring exchange to 8019 $20.61 hydraulic roller spring -------------- 8049 $111.75 * 

*Rectangular Port BBC
8031 $21.83 solid roller spring upgrade to high lift/high rpm 8014 $31.53 solid roller spring --- 8038 $471.69
8031 $21.83 solid roller spring exchange to 8002 $18.19 hydraulic roller spring -------------- 8061 $0.01 * 

*Valve Upgrades for Power Adder Applications
Upgrade to 2.100 Heavy Duty valve (Thicker Valve face) ------------------------- 7515 $38.70
Upgrade to 2.125 Heavy Duty Valve (Thicker Valve face) ------------------------- 7516 $38.70
Upgrade to 1.600 Inconel Exhaust valve--------Call for Part Numbers .
Upgrade to 1.880 Inconel Exhaust valve--------------------------- 7634 $224.96

WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov

Page 48

Cylinder Head and Valvetrain Components
AFR Head Studs, Nuts, and Washers

* Head Studs, Head Bolts, Head Bolt Sleeves, and Head Bolt Washers
Description Part Number
ARP Head Stud Kit, std. 12-point, SBC, engine set 6305 $321.71
ARP Head Bolt Kit, 12-point, BBC, Head, engine set 6306 $154.81
ARP Head Stud Kit, std. 12-point, BBC, engine set 6307 $296.33
ARP Head Bolt Kit, std., Small Block Chevy, engine set 6310 $128.20
ARP Head Bolt Kit, std. 12-point, BBC 6308 $148.76
ARP Head Bolt Washer Kit, Small Block Chevy 6320 $20.56

AFR Head Bolts, Nuts, and Washers

AFR & Felpro Gaskets *
Description Part Number
Head Gasket, Chevy Small Block, Fel Pro #1034 $2,315.10 6807 $112.48
Head Gasket, Chevy Small Block, 4.166 bore, Fel Pro #1003 ------------------- 6800 $96.76
Head Gasket, Chevy Small Block, 4.125 bore, Fel Pro #1074 $2,577.01 6803 $105.23
Head Gasket, Chevy Small Block, 4.190 bore, Fel Pro #1004 ------------------- 6801 $105.23
Head Gasket, Chevy Small Block, 4.200 bore, Fel Pro #1014 ------------------- 6802 $96.76
Head Gasket, Chevy Big Block, 4.540 bore, Fel Pro #1017 ---------------------- 6850 $127.00
Head Gasket, Chevy Big Block, 4.630 bore, Fel Pro #1057 $2,755.29 $2,394.06 6852 $127.00
Head Gasket, Ford Small Block, 1962-93, 4.100 bore, Fel Pro #1011-1 -------- 6808 $94.34
AFR SBC Intake Gasket 180cc-195cc Street, 2.130 x 1.30 ---------------------- 6900 $22.96
AFR SBC Intake Gasket 195cc comp - 245cc, 2.23 x 1.33  ---------------------- 6901 $21.76
AFR Intake Gasket, Chevy Big Block, 1.820x2.540  ---------------------------- 6855 $30.23
AFR SBF Intake Gasket 165cc, 2.100 x 1.29 ------------------------------------- 6910 $28.11
Exhaust Gasket, Chevy Small Block 180cc & 195cc Heads, Fel Pro #1404 ------ 6834 $23.04
AFR SBC Exhaust Gasket 180cc - 245cc, 1.50 x 1.60 --------------------------- 6905 $22.96
AFR Exhaust Gasket, Chevy Big Block Aluminum Heads ------------------------- 6858 $31.44
AFR SBF Exhaust Gaskets 165cc - 185cc, 1.40 x 1.39 -------------------------- 6915 $26.60
Valve Cover Gasket, Chevy Small Block, Fel Pro #1604 -------------------------- 6838 $45.96

Page 49
Valve Coverrs

Gloss Black
Available in a Gloss Black Powder Coat
or Polished Aluminum Finish*

**Tall Valve Covers
 
Description Part Number 
AFR SBC Tall Valve Covers 4.75 inside height, Black Powder Coat  6705 $246.19
AFR SBC Tall Valve Covers 4.75 inside height, Polished Aluminum  6704 $246.19
AFR SBF Tall Valve Covers 4.125 inside height, Black Powder Coat 6715 $250.36
AFR SBF Tall Valve Covers, 4.125 inside height Polished Aluminum 6714 $250.36

#6714 $250.36

*#6731 $30.24 -Breather

*NOTE: Although extremely beautiful, this is not a perfect/show quality peice. There may be minor imperfections.


Polished Aluminum
CNC Engraved Valve Covers to make
your SBC, SBF, BBC, or BBF shine

Standard Valve Covers **
Description Part Number
AFR SBC Standard Valve Covers 2.5 inside height, Black Powder Coat ------- 6707 $246.19
AFR SBC Standard Valve Covers 2.5 inside height, Polished Aluminum, ------ 6706 $246.19
AFR BBC Standard Valve Covers, Black Powder Coat--------------------------- 6723 $425.61
AFR BBC Standard Valve Covers, Polished Aluminum   ------------------------- 6722 $425.61
AFR BBF Standard Valve Cover, Black Powder Coat 6727 $321.30

#6707 $246.19

#6704 $246.19

*#6732 $32.65 -PCV Valve

Page 51

Footnotes
Bar Codes: Please keep your bar code or labels on your box, these numbers contain all the specs for your heads for easy reference when calling AFR.
High Volume/Pressure Oil Pumps - If you are using a high volume or high pressure oil pump it can submerge the valve seals in oil causing smoking or oil consumption. Your block manufacturer or engine builder can recommend oil restrictions to the top end/valve train components.
Boosted/Nitrous Applications - We strongly recommend considering Inconel exhaust valves and AFR’s optional heavy duty intake valve for power adder applications. Since boosted or nitrous oxide applications accelerate RPM quickly, additional spring pressure is required. We strongly recommend upgrading your valve springs or increasing your valve spring pressures since boost pressure on the valve reduces spring tension. For example, 15lbs boost on a 2.125 OD valve reduces the springs closed seat pressure by approximately 40-45lbs.
All MARINE Applications - We strongly recommend Inconel exhaust valves & also offer a hard anodized coating to slow the effects of corrosion. Please see note on valve clearance below.
Valve Guide Clearance - Your AFR Heads come with proper guide clearance (.0012”-.0016”) for most applications. Boosted/Nitrous or marine applications might require additional clearance and it is the customer’s responsibility to verify proper clearance in these applications.
Valve Springs - AFR’s standard valve springs are very high quality and sufficient for most applications. However, forced induction, nitrous oxide and cams with aggressive ramp rates (some cam manufacturers offer very fast/aggressive ramp designs and lobe profiles) may require additional spring pressure. We offer optional valve springs for these types of applications. AFR also recommends the use of billet cam cores and short travel Hydraulic Roller lifters which tolerate higher spring loads. Please don’t hesitate to contact us directly if you question which spring is correct for your application.
AFR Small Block Chevy & Ford - We strongly recommend using 7/16” rocker studs with todays fast cam rates and RPM capabilities as 3/8” Rocker Studs can occasionally break.

AFR TITANIUM VALVES MIGHT REQUIRE LASH CAPS AND DIFFERENT LENGTH PUSHRODS. ADDITIONALLY, TITANIUM VALVES ARE COATED WITH CrN. DO NOT GRIND VALVES BECAUSE IT REMOVES THE PROTECTIVE CrN COATING.

Piston to Valve
- AFR assumes no responsibility for damage if the end user builds an engine without properly verifying he has enough piston to valve clearance (depth and radial clearance both checked). We recommend a minimum depth of .080” on the intake valve and .100” on the exhaust with a radial clearance of .020” minimum around the perimeter of each valve. Clay is recommended to visually verify both depth as well as radial clearance. Just checking depth is not enough, the position of the valve pocket must also be addressed. It is the customers responsibility to verify proper piston to valve clearance.
AFR SBC LT-1 / LT-4/Vortec & Late Model TBI/TPI Heads - Your factory accesory bolts and center bolt valve covers need to be shortened 3/16” or they will bottom out. Additionally these cylinder heads are machined for both center and perimeter bolt valve covers, please see your instructions to avoids oil leaks.
AFR LS1 - Does not have provisions for 1997-1998 perimeter bolt valve covers, conversion kits availabe.
LS1 & LS3 Heads - Stock GM rocker arms are not designed/engineered to accommodate aftermarket cams or higher spring pressures. At a minimum AFR recommends using Yella Terra or Scorpion. Without the proper parts you will experiences accelerated guide wear.
AFR SBC 227/235cc Heads - Due to the “60/40” stud and valve locations, shaftmount rockers are highly recommended, however if you’re ONLY Drag Racing you can run a .050” offset intake studmount rocker with the AFR supplied guideplate (exhaust will use a standard rocker). Please note that with the .050” offest rocker arms the roller tip of the studmount rocker will not be perfectly centered and will not sit squarely on the valve causing increased side loading and wear.
This option is not recommended for race/endurance applications and/or street engines that see a lot of miles.
Comp. Cam Pro Magnum Roller Rockers - Typically these rocker arms do not clear a 1.500” O.D. retainer. A lash cap is required to space up the rocker arm.
Shaft Mount Rockers - Shaft mount rockers might require additional clearance for proper pushrod fitment. Do not clearance the push rod area as the wall is .060” thick. If you use Jesel, AFR only recommends their Pro Series.
BBC Domed Pistons - With some domed aftermarket pistons, it may be necessary to slightly clearance or modify the piston due to our more efficient heart shaped combustion chamber design. Most of the newer designed dome profiles will clear. AFR strongly recommends material be removed from the piston and not the cylinder head. Our combustion chamber shapes are very critical to flow and altering the cylinder head can adversly affect flow and power production. It
is the customers responsibility to verify proper piston to head clearance.
BBC Stud Mount Rockers - For optimized geometry and proper wipe pattern we highly recommend AFR custom fitted stud mount rocker arms Part #6043 $532.16 for applications below .790 lift, 7400 RPM and 760 lbs open pressure . For applications above these limits typically shaft mount rockers are advised.
Pushrods - AFR SB Chevy and Ford heads are designed for 5/16” pushrods. AFR BB Chevy and Ford heads are designed for 3/8” pushrods. Larger pushrods will not fit without clearancing and is not recommended since some areas are very thin. AFR recommends the use of .120 thick-wall pushrods.
General Recommendatons for All Aftermarket Heads:
• Check pushrod clearance with heads placed on the block before final assembly.
• Check pushrod length, different length pushrod might be required.
• Flat or angle mills could affect flow numbers and might require a thicker intake gasket.
• Due to many available factory OEM and aftermarket style/variations your existing stud girdle may not fit (AFR heads require AFR Stud Girdles)
• To ease installation with 1.550” O.D or larger springs, 12 pt head bolt or studs are recommended for extra clearance. Beveled or ground washers
might be needed (ARP #200-8504 comes with smaller O.D and doesn’t need to be ground)
• SB Chevy or SB Ford heads with 1.625” O.D springs will require some springs to be removed for access to some head bolts when installing the heads.
• Use full roller rocker arms, roller tip rockers with stock style bodies are NOT recommended.
Intake Runner & Chamber Volumes - Intake runner volumes can vary 2-3cc from advertised specs. The reason for this is different combustion chamber volumes require different intake runner lengths for proper alignment with the intake manifold. Combustion Chamber volumes can also vary by 1cc due to production tolerances.
CNC Porting - Occasionally a 100% CNC ported head might have a very small area left “as cast”, this in no way affects performance.
Valve Spring Installed Heights - AFR valve spring installed height specs is plus or minus .015 which is the smallest shim available for adjustment.

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