Product Description
Engine Assembly: Deluxe ZZ-572; 620 HP @ 5500 RPM; 650 Ft. Lbs. TQ @ 4500 RPM; 9.6:1 compression ratio: 4.560″ bore; 4.375″ stroke: bowtie tall deck block with one-piece rear seal; forged shotpeened 4340 steel crankshaft & H-beam style connecting rods; forged aluminum pistons with full floating wrist pin; plasma-moly piston ring; hydraulic roller camshaft with .632 lift and 254 / 264 duration @ .050; hydraulic roller tappet lifters· aluminum rectangular port cylinder heads with a 118cc combustion chamber; 2.25″ stainless steel intake valves; 1.88 stainless steel exhaust valve; Dual spring 1.540 diameter valve springs; hardened chromemoly steel spring retainers; aluminum 1.7:1 ratio roller rocker arms; high per… More >>
GM Part 12498793 – ENGINE ASM, 572 DELUXE