Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons So can features such as

So can features such as full ball-bearing construction

Let everyone know you take high performance seriously by flying the Speedmaster name and colors on a Speedmaster banner

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

Superior engineering

protective

Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons So can features such asSpeedmaster 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.