Manley rotating assembly for BBC 572 (4.250" stroke) arrives as a matched rotating package engineered for high-demand engines. Precision-forged crankshafts, high-strength connecting rods and premium pistons are combined to improve balance, reduce friction and handle extreme RPM and cylinder pressures. The kit includes 4340 forged H-beam rods with 7/16 ARP 8740 (optional ARP 2000), 2618 forged pistons and a 4340 forged crank; supports about 900 hp with ARP 8740 or up to 1,500 hp with ARP 2000 and references Ford 4.6L fitment.
Manley Rotating Assembly, BBC 572 4.250 STROKE/4.625/-3cc