Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons and quality components are combined

and quality components are combined into a precision-machined compact package

Speedmaster aluminum LS valve covers will give your Chevrolet LS series engines a totally new look

or custom altered parts

Speedmaster offers all the accessories you will need to find the proper configuration for your supercharger combination

Speedmaster bearings are precision-engineered to provide you with superior quality

Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons and quality components are combinedSpeedmaster 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.