SRP Pistons SRP Professional Pistons; Flat Top; .912 Pin Diameter; Set of 8 Pistons; Include RingSet: JG31F8-4030-2 CHEVROLET 302 SM BLOCK


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Part #: 279670
Notes: SRP Professional Pistons
Flat Top
.912 Pin Diameter
Set of 8 Pistons
Include RingSet: JG31F8-4030-2
MSRP: $675.41
Your Price: $592.10
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Specs

Bore 4.03
C/D 1.6
CID 392
CID 306
Comp Ratio @ 58cc 12.2:1
Comp Ratio @ 58cc 9.7:1
Comp Ratio @ 64cc 11.3:1
Comp Ratio @ 64cc 9:1
Comp Ratio @ 70cc 10.6:1
Comp Ratio @ 70cc 8.4:1
Dome CC -5
Gram Weight 466
Oversize 0.03
Rod 5.956
Rod 5.09
Stroke 3.00
Stroke 3.85

This Item Also Available In

Part Number Price Notes & Specs
271099 $624.94 Notes SRP Professional Pistons
Flat Top
Oil Rail Support Included
Set of 8 Pistons
Include RingSet: JG31F8-4030-2
Bore 4.03
C/D 1.1
CID 347
CID 434
Comp Ratio @ 58cc 10.9:1
Comp Ratio @ 58cc 13.3:1
Comp Ratio @ 64cc 10.1:1
Comp Ratio @ 64cc 12.4:1
Comp Ratio @ 70cc 11.6:1
Comp Ratio @ 70cc 9.5:1
Dome CC -5
Gram Weight 395
Oversize 0.03
Rod 6.25
Rod 5.40
Stroke 3.40
Stroke 4.25
279524 $625.58 Notes SRP Professional Pistons
Flat Top
Oil Rail Support Included
Set of 8 Pistons
Include RingSet: JG31F8-4040-2
Bore 4.04
C/D 1.1
CID 435
CID 348
Comp Ratio @ 58cc 10.9:1
Comp Ratio @ 58cc 13.4:1
Comp Ratio @ 64cc 12.4:1
Comp Ratio @ 64cc 10.2:1
Comp Ratio @ 70cc 11.6:1
Comp Ratio @ 70cc 9.5:1
Dome CC -5
Gram Weight 399
Oversize 0.04
Rod 5.40
Rod 6.25
Stroke 4.25
Stroke 3.40
279671 $649.73 Notes SRP Professional Pistons
Flat Top
Set of 8 Pistons
Include RingSet: JG31F8-4030-2
Bore 4.03
C/D 1.23
CID 316
CID 418
CID 408
Comp Ratio @ 58cc 10:1
Comp Ratio @ 58cc 12.9:1
Comp Ratio @ 58cc 12.6:1
Comp Ratio @ 64cc 12:1
Comp Ratio @ 64cc 11.7:1
Comp Ratio @ 64cc 9.3:1
Comp Ratio @ 70cc 11.2:1
Comp Ratio @ 70cc 8.7:1
Comp Ratio @ 70cc 11:1
Dome CC -5
Gram Weight 417
Gram Weight 399
Oversize 0.03
Rod 5.40
Rod 6.20
Rod 6.25
Stroke 4.10
Stroke 4.00
Stroke 3.10
279672 $671.96 Notes SRP Professional Pistons
Inverted Dome
Oil Rail Support Included
Set of 8 Pistons
Include RingSet: JG31F8-4030-2
Bore 4.03
C/D 1.1
CID 347
CID 434
Comp Ratio @ 58cc 12.2:1
Comp Ratio @ 58cc 9.9:1
Comp Ratio @ 64cc 11.4:1
Comp Ratio @ 64cc 9.3:1
Comp Ratio @ 70cc 10.7:1
Comp Ratio @ 70cc 8.7:1
Dome CC -12.5
Gram Weight 395
Gram Weight 372
Oversize 0.03
Rod 5.40
Rod 6.25
Stroke 3.40
Stroke 4.25
279673 $636.60 Notes SRP Professional Pistons
Inverted Dome
Set of 8 Pistons
Include RingSet: JG31F8-4030-2
Bore 4.03
C/D 1.23
CID 418
CID 408
Comp Ratio @ 58cc 11:1
Comp Ratio @ 58cc 10.7:1
Comp Ratio @ 64cc 10.1:1
Comp Ratio @ 64cc 10.3:1
Comp Ratio @ 70cc 9.5:1
Comp Ratio @ 70cc 9.7:1
Dome CC -19
Gram Weight 399
Gram Weight 395
Oversize 0.03
Rod 6.25
Rod 6.20
Stroke 4.10
Stroke 4.00
279674 $636.60 Notes SRP Professional Pistons
Inverted Dome
Set of 8 Pistons
Include RingSet: JG31F8-4040-2
Bore 4.04
C/D 1.23
CID 408
CID 420
CID 410
Comp Ratio @ 58cc 11:1
Comp Ratio @ 58cc 10.7:1
Comp Ratio @ 64cc 10.4:1
Comp Ratio @ 64cc 10.1:1
Comp Ratio @ 70cc 9.8:1
Comp Ratio @ 70cc 9.5:1
Dome CC -19
Gram Weight 399
Gram Weight 372
Oversize 0.04
Rod 6.20
Rod 6.25
Stroke 4.10
Stroke 4.00

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1967 - 1969 302 SMALL BLOCK ALL ALL ALL ALL ALL ALL
FORD
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1969 - 1997 351 SMALL BLOCK WINDSOR ALL ALL ALL ALL ALL

Product Description

SRP Professional Pistons include features used in professional racing such as lightweight forged side relief (FSR) forgings, high quality wrist pins, and precision CNC machined ring grooves and skirts. In addition, every package includes JE Pro Seal Premium Piston Rings. The included ring set features a 1.2 premium steel top ring, 1.5mm Napier (hooked face) second ring and 3.0mm standard tension oil ring. Every piston is designed and manufactured in the USA at the advanced JE/SRP Pistons manufacturing center.

SRP Professional piston designs were created using 3D computer modeling and tested for strength using Finite Element Analysis (FEA). Several revisions were made to optimize the strength and weight before manufacturing began. Unlike other piston manufacturers, JE/SRP Pistons manufacture billet pistons from solid pucks of aluminum for dyno testing in actual engines prior to approving the final forging designs.

Features

  • 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

SRP Professional Pistons are Sold in Matched set of 4, 6 or 8.

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