620 horsepower from a 572 ci crate engine. The new ZZ572 / 620 is built around an all new Gen VI tall deck Bow Tie cylinder block. This all new race block is filled with a forged 4340 steel 4.375 in stroke crankshaft, 4340 steel H-beam rods, and forged aluminum pistons with full floating wrist pins. Plasma moly piston rings are standard as is the screened and louvered windage tray. GM's first purpose built drag race engine is filled with hard core race parts for hard core performance and long term reliability.

This assembled Long Block 572 Crate Engine is complete from valve covers to oil pan, but it does not include water pump, carburetor, distributor, intake manifold, or spark plug wires.