Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons Made from heavy-gauge metal with

Made from heavy-gauge metal with a silkscreen finish for long-lasting use

They have injector bosses precisely positioned and machined for excellent fuel spray patterns and maximum power

Speedmaster aluminum crankshaft pulleys are manufactured from 356 aluminum that is heat-treated to T-6 specs

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

These camshafts are precision-ground from race-quality cores

Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons Made from heavy-gauge metal withSpeedmaster 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.