JE Pistons has been the industry leader in forged racing pistons for Chevy, Ford, Mopar, and Buick engines for over 60 years.
Application specific forgings optimize uniform crown thickness.
A contact reduction groove minimizes frictional drag.
An accumulator groove increases top ring stability and sealing.
CNC-machined side relief features a lower support band for additional skirt strength.
Honed pin bores, double pressure fed pin oilers, and wire locks are included.
23-degree flat top; fits 3.480 and 3.500 stroke; 3mm oil ring; set of 8 pistons; recommended ring set: J30008-4030-5.
CID: 383, block height: 9, comp ratio @ 58cc: 11.2:1, dome volume: -5, stroke: 3.75, bore: 4.03, comp height: 1.125, comp ratio @ 58cc: 11.9:1, CID: 357, comp ratio @ 76cc: 9.1:1, rod: 6.125, comp ratio @ 76cc: 9.7:1, oversize: 0.03, rod: 6, comp ratio @ 64cc: 10.3:1, comp ratio @ 64cc: 11.1:1, gram weight: 391, stroke: 3.5.
