Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons Made from heat-treated

Made from heat-treated

They distribute the ever-increasing valve spring loads over the retainer better than typical 7 degree locks by reducing the chance of "pull-through" failure

377" (35mm) axle shaft35 spline axles:Requires bearing PCE231

So can features such as full ball-bearing construction

protective

Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons Made from heat-treatedSpeedmaster 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.