LS1 CP pistons are designed specifically to fit all LS 15° heads. CP Pistons are proudly made in the USA from 2618 forgings and are suitable for nitrous oxide Superchargers or Turbos. Pistons feature special skirt design for low piston noise, 1.5mm top ring, 1.5mm second ring, 3.0mm oil ring lands, rings *NOT* include .927 x 2.250 wrist pins, and locks included. Compression Ratio w/ 64cc Head 10.3:1
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