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  • FlyWeight, competition two-barrel piston for optimum "off-the-corner" acceleration
  • Piston designed for two-barrel applications up to 400 horsepower
  • Forged from Premium 2618 aluminum alloy
  • Forced Pin Oiler for increased wrist pin lubrication
  • Pin fitting and double spiro locks included
  • 927-2500-150 wall wrist pin (118 grams) included
  • CNC Machined ring grooves accept 1/16, 1/16, 3/16 rings (Rings Sold Separately)
  • Optional bearing steel pins available.
350 Block
Std Bore: 4.000
Ring package designed for: 1/16, 1/16, 3/16 Rings

Click here to see matching JE Pro Seal Head Gaskets!

Tech and Installation Tips
Part # CID Bore Stroke Rod
Lgth.
Block
Ht.
Comp.
Ht.
Head Cubic Centimeters
58cc 64cc 70cc
Compression Ratio
Dome
Vol.
Gram
Wt.
Footnote Oversize Recom.
Ring Set
338158 352 4.000 3.500 5.700 9.000 1.550 11.2 10.4 9.7 -4cc NEW A,M STD J100F8-4000-5
338159 354 4.010 3.500 5.700 9.000 1.550 11.2 10.4 9.7 -4cc NEW A,M 0.010 J100F8-4010-0
338160 355 4.020 3.500 5.700 9.000 1.550 11.2 10.4 9.7 -4cc NEW A,M 0.020 S100S8-4020-5
157072 357 4.030 3.500 6.125 9.000 1.125 11.2 10.4 9.7 -4cc 371 A 0.030 S100S8-4030-5
157076 355 4.030 3.500 5.700 9.000 1.550 11.2 10.4 9.7 -4cc 435 A 0.030 S100S8-4030-5
157064 355 4.030 3.500 6.000 9.000 1.250 11.2 10.4 9.7 -4cc 390 A,M 0.030 S100S8-4030-5
157065 357 4.040 3.500 6.000 9.000 1.250 11.3 10.5 9.8 -4cc 394 A,M 0.040 S100S8-4040-5
157077 357 4.040 3.500 5.700 9.000 1.550 11.3 10.5 9.8 -4cc 440 A 0.040 S100S8-4040-5
157073 359 4.040 3.500 6.125 9.000 1.125 11.3 10.5 9.8 -4cc 371 A 0.040 S100S8-4040-5
157078 361 4.060 3.500 5.700 9.000 1.550 11.4 10.6 9.9 -4cc 447 A 0.060 S100S8-4060-5
157066 361 4.060 3.500 6.000 9.000 1.250 11.4 10.6 9.9 -4cc 401 A 0.060 S100S8-4060-5

- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.


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