Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons They distribute the ever-increasing valve

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

They are available in a wide variety of styles for many applications

Speedmaster H Beam Street / Strip connecting rods are manufactured from aircraft quality 4340 Chromoly steel

and a high-performance

Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons They distribute the ever-increasing valveSpeedmaster 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.