The Manley rotating assembly for SBC 355 (3.480-inch stroke, -4cc flat) is a fully matched rotating kit engineered for durability and balanced operation in small-block builds. It pairs precision forged crankshafts with 4340 H-beam connecting rods and 2618 forged aluminum pistons to minimize friction and handle high cylinder pressures. Hardware options include 7/16 ARP 8740 cap screws or optional ARP 2000 bolts, supporting performance targets up to roughly 750 hp with the standard fastening.
Manley Rotating Assembly, SBC 355 3.480 STROKE/-4cc FLAT