J.E. Pistons High Performance

Street Strip Race

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877

Contact us anytime OR use your e-mail program and type in ron@rpmrons.com to send an e-mail with what you need

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Chevrolet Small Block Chevy

305 Small Block 23º Flat Top













PISTON DESIGN
Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength
up. to 20% lighter than traditional equivalent
High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation
Accumulator grooves for improved ring seal
Designed for normally aspirated or moderate forced induction/nitrous applications
Now includes high performance skirt coating!
RINGS INCLUDED
Lightweight, low friction metric ring package included
1.2mm top ring, 1.5mm 2nd ring, 3.0mm standard tension oil ring
Minimal filing required

PINS AND LOCKS
High quality 2.250" pin further reduces reciprocating weight
Carbon steel wire locks included



APBA - 305 APBA FLAT TOP & DISH SERIES Std Bore: 3.736 Ring package designed for: 5/64, 5/64, 3/16 Rings

Part #
Your Cos

CID

Bore

Stroke

Rod Lgth.

Block Ht.

Comp. Ht.

Head Cubic Centimeters

52cc

58cc

64cc

Compression Ratio

Dome Vol.

Gram Wt.

Foot
note

Over
size

Recom. Ring Set

174002 $1,136.14

310

3.766

3.480

5.700

9.000

1.560

9.8

9.2

8.5

-12.0

472

M, Dish

0.030

Included

174004 $1,136.14

310

3.766

3.480

5.700

9.000

1.560

10.8

10.0

9.3

-5.0

504

M, Flat Top

0.030

Included

Footnotes:
A fits 3.480 and 3.500 stroke
B Oil Rail Support is Included
C .927 Pin Diameter
D .912 Pin Diameter
E .990 wrist pin
F Indicates 1.040 Pin Diameter
H Indicates 1.094 Pin Diameter
J Indicates 3mm Oil Ring
K .945 Pin Diameter
L Limited Quantities available
M Made To Order
P .975 Pin Diameter
S Solid dome design
W 428 Crank Shaft
X angle milled heads

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