Chevy BBC 454 6.385" 4.500" Bore 1.270" .990" Dome Top Forged Pistons Precision CNC-machined threads to ensure

Precision CNC-machined threads to ensure optimum seat pressure

These pumps have a 140 gph flow rate

Ensure that you have the finest distributor cap available by using one of these Speedmaster distributor caps

using an O-ring to prevent leakage

Chevy BBC 454 6.385" 4.500" Bore 1.270" .990" Dome Top Forged Pistons Precision CNC-machined threads to ensureSpeedmaster 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.