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Complete CNC Ported Cylinder Heads, CNC Ported Intake Manifolds & Parts Small Block Chevy, Big Block Chevy, Small Block Ford, Big Block Ford |
801-754-5338 or Toll free 866-700-5877
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Hours: 9:00 AM to 5:00 PM Monday - Friday mountain time (Utah) |
Engine Rebuild Kit and Parts Online Catalog. |
TABLE OF CONTENTS
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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. |
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Table of Contents........................................................2 |
Introduction ...........................................................3-5 |
Cylinder Head FAQ..................................................6 |
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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 |
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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 |
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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 Researchs 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 Gliddens 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. |
AFRs 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 Researchs 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 90s 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- 90s, 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 Researchs 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 tomorrows engine builders. |
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 & Sharps 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. |
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 AFRs 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 AFRs proven components for maximum power and reliability. |
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 Street 165cc/185cc Exhaust Pattern -Standard 2 spacing -Factory and Aftermarket headers |
180cc SBC Eliminator 23° Street
Head The Small Port,High Velocity Torque Monster AFRs 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.
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 |
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 |
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 |
190cc Vortec Eliminator23°
SBC Street Head The Small Port, High Velocity Torque Monster AFRs 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.
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
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 AFRs 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.
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
*For 1987-1995 with 72° Bolt Angle, fits either center or perimeter bolt valve cover. WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
195cc SBC Eliminator 23° Competition Race
Head The Ultimate Bolt-on Emissions Legal Street Weapon AFRs 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.
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
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210cc SBC Eliminator 23° Race
Head Powerful and Proven with Standard Valve and Stud Locations AFRs 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.
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 |
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 12
220cc SBC Eliminator 23° Race
Head AFRs Ultimate SBC Head With Standard Valve and Stud Location AFRs 220cc Race Ready and Competition heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFRs 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.
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 |
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 13
227cc SBC Eliminator 23° Race
Head 60/40 Valve Spacing for Improved Performance AFRs 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.
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 14
235cc SBC Eliminator 23° Race
Head Performance Like A Raised Runner Head
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 |
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
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Page 15
245cc SBC Eliminator 23° NPP
Race Head Our Largest and Most Powerful 60/40 Head AFRs 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 AFRs 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.
Test conducted at 28 of water (pressure) on Superflow 600 Bore size: 4.155; intake 3/4 radius plate exhaust 1 7/8curved pipeWARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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
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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. AFRs spread port head has all the benefits and features of AFRs 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. |
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180, 195, 210 & 227cc SBC Gen II LT1/LT4
Eliminator 23° Heads AFRs 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 AFRs 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 |
Intake, & Exhaust
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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. AFRs 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. |
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210cc LSx Cathedral Port Mongoose 15° Competition Head The Small Port, Emission Legal High Velocity Torque Monster AFRs 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.
*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.
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
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215cc LSx Cathedral Port Mongoose 15° Competition Head The Medium Sized, High Velocity Torque Monster AFRs 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.
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
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Page 21
230cc LSx Cathedral Port Mongoose 15° Competition Head The Ultimate Bolt-On Emission Legal Street/Strip Weapon AFRs 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.
*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.
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 |
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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245cc LSx Cathedral Port Mongoose 15° Competition Head Our Max Effort Cathedral Port Offering AFRs 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.
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 |
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
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260cc LS3 Rectangle Port Mongoose 12° Competition Head AFRs 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. Theyre 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).
Test conducted at 28 of water (pressure) on Superflow 600 Bore Size: 4.060, intake 3/4 radius plate ,exhaust 2 curved pipe |
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)
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265cc Oval Port Magnum BBC 24° Small Port, High Velocity, Torque Monster AFRs 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.
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 |
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
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Page 25
290cc Oval Port Magnum BBC 24° Our Medium Sized Oval Port AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 26
300cc Oval Port Magnum BBC 24° The Ultimate Street/Race Weapon AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
305cc Rectangle Port Magnum BBC
24° AFRs Torque Monster AFRs 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.
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 |
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 Note: 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.
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Page 28
315cc Rectangle Port Magnum BBC
24° AFRs Torque Monster AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 29
325cc Rectangle Port Magnum BBC
24° AFRs Best of Both Solution AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 30
335cc Rectangle Port Magnum BBC
24° AFRs Best of Both Solution 30 www.airflowresearch.com Note: 1 longer head bolt needed on four bottom exhaust bolt holes. AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 31
345cc Rectangle Port Magnum BBC
24° AFRs Magnum Series Note: 1 longer head bolt needed on four bottom exhaust bolt holes. AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 32
357cc Rectangle Port Magnum BBC
24° AFRs Magnum Series AFRs 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.
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 33
377cc Rectangle Magnum 24°
BBC AFRs Magnum Series
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
Page 34
385cc Rectangle Magnum 24°
BBC AFRs Magnum Series
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 |
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.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
457cc Rectangle Port Magnum 18°
BBC Head AFRs 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..... dont 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.
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 |
Intake, & Exhaust Specifications & Features: Material------------------------------------------------------- A356 Aluminum Intake Port Volume------------------------------------------------------- 457cc Intake Port Dimension------------ 2.490H 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
|
165cc SBF Renegade 20° Street
Head The Small Port, High Velocity, Emission Legal Torque Monster AFRs 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.
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 |
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
|
Page 37
185cc SBF Renegade 20° Street
Head The Ultimate Bolt-On Emission Legal Street/Strip Weapon AFRs 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.
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
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Page 38
195cc SBF Renegade 20° Competition
Head The Maximum Bolt-On Emission Legal Street/Strip Weapon AFRs 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.
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 |
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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205cc SBF Renegade 20° Competition
Head The Most Powerful Standard Street/Strip Head Ever AFRs 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.
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 |
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
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220cc SBF Renegade20° Competition
Head The Best 20¢ª In-Line Head You Can Buy AFRs 220cc Competition heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFRs 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.
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 |
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
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
280cc Bullitt BBF 14° Street
Head Small Port, High Torque Street/Strip Heads AFRs 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 AFRs valve angle and location, custom pistonsor notching your existing pistons will be required.
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 |
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
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295cc Bullitt BBF 14° Aggressive Street/Strip Performance Heads AFRs 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 AFRs valve angle and location, custom pistons or notching your existing pistons will be required.
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
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315cc Bullitt BBF 14° The Ultimate BBF Race Heads The 315cc heads are AFRs 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 AFRs valve angle and location, custom pistons or notching your existing pistons will be required.
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 |
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
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PARTS
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Aluminum Manifolds
AFR is excited to announce their new line of aluminum manifolds. Were 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 |
AFR offers a complete selection of high quality stainless steel 21-4N valves to suit virtually any application. For the street, AFRs 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, AFRs 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 AFRs lightweight titanium valves which help reduce valve float and improve valvetrain stability for more power.
WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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AFR Hydraulic Valve Springs AFR Roller Valve Springs |
AFR Titanium Retainers and Locks AFR 4140 Chrome Moly Steel Retainers and Locks
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AFR Roller Rockers
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AFR Stud Girdle and Adjusting Nuts
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*Installation hardware may vary and machining may be required. |
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WARNING: Cancer and Reproductive Harm - www.P65Warning.ca.gov |
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AFR Head Studs, Nuts, and Washers
AFR Head Bolts, Nuts, and Washers |
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Gloss Black Available in a Gloss Black Powder Coat or Polished Aluminum Finish*
#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
#6707 $246.19 #6704 $246.19 *#6732 $32.65 -PCV Valve |
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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 AFRs 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 customers responsibility to verify proper clearance in these applications. Valve Springs - AFRs 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 dont 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 youre 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 doesnt 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. |