Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons These are direct plug replacements

These are direct plug replacements for OEM coils

These camshafts are precision-ground from race-quality cores

and increasing the cap's resistance to closing up under high loads

Speedmaster Aluminum Roller Rockers are extruded from 6061 T6 Aluminum

Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons These are direct plug replacementsSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.