The Manley rotating assembly for a Chevy LS 402 (4.005in bore, 4.00in stroke, -18cc) is a complete, matched package engineered for high-demand engines. It pairs a precision-forged 4340 crankshaft with forged 4340 H-beam connecting rods and 2618 forged aluminum pistons to deliver strength and balance. Tight tolerances, high-performance rings and premium bearings improve load handling and durability for serious builds.
Manley Chevy LS 402 4.00in Stroke 4.005in Bore -18cc Rotating Assembly