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Speedmaster H Beam Street / Strip connecting rods are manufactured from aircraft quality 4340 Chromoly steel
Let everyone know you take high performance seriously by flying the Speedmaster name and colors on a Speedmaster banner
and a high-performance
Superior engineering
Chevy BBC 454 6.385" 4.330" Bore 1.270" .990" Dome Top Forged Pistons Speedmaster H Beam Street /Speedmaster 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.
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