The engine build was performed by Heyman and friend Kurt Mezger at Mezger's shop, Vintage Performance. The engine's 10.3:1 compression is actuated by 94mm Cima pistons. Eagle 5.7-inch connecting rods effect an 84mm stroke and link the pistons to a balanced 84mm Demello crankshaft; KS main and Clevite rod bearings keep things spinning smoothly along.