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These Speedmaster chrome air cleaner tops are designed to replace the OEM top without alterations
They are machined from chromoly steel
These rockers are precision-machined to ensure consistency and ratio accuracy and have a great looking anodized finish
Speedmaster rear-end assemblies are the ultimate solution
reliable cam timing
Chevy BBC 454 6.385" 4.350" Bore 1.270" .990" Dome Top Forged Pistons These Speedmaster chrome air cleanerSpeedmaster 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.
