Want to build your own ZZ572/720R, but don't know where to start? Try our ZZ572/720R partial engine, all of the great bottom end components you need to get going! It comes with the forged crankshaft, rods, and pistons installed in the special orange powder-coated 572 block. This partial engine does not include the camshaft, timing chain, camshaft sprocket, oil pan, oil pump, or front cover. Order all the parts to complete the engine from your GM Performance Parts dealer or finish it off with your own custom parts.