BBC Dome Piston Set 4.500 Bore +38.4cc

RACE TEC PISTONS 1000329 are forged large dome pistons for Big Block Chevy 508 engines. They feature a 4.500-inch bore, 4.000-inch stroke, 6.385-inch rod length, and a 38.4cc dome. Constructed from 4032 low expansion, high silicon forged material, these pistons are suitable for street/strip applications. They include broached pin oilers and accumulator grooves. The pistons are designed for 1.5, 1.5, 3mm rings (sold separately) and come with 0.990-inch wrist pins. Compression ratios are 13.3:1 (112cc), 12.5:1 (118cc), and 11.8:1 (124cc). These pistons are not compatible with Edelbrock Performer, Performer RPM, or GM Signature Series cylinder heads.