Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons Speedmaster aluminum LS valve covers

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

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

This is our most popular manifold and is showing up on many performance street machines and street rods

Step up to the high-rpm power of an open plenum with Speedmaster HiRise intake manifolds

Complete kit with Multi-Layer Steel (MLS) Head Gaskets

Chevy BBC 454 6.385" 4.530" Bore 1.270" .990" Dome Top Forged Pistons Speedmaster aluminum LS valve coversSpeedmaster 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.