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wall thickness and are formed from 4130 chromoly steel
an internal inertia ring
Speedmaster automatic transmission rebuild components ensure smooth gear changes and overall transmission performance
Enhance your engines performance with this lightweight
and best longevity on the market
Chevy SBC 383 ci 6.0" 4.040" 1.125" 0.927" Flat Top Forged Pistons wall thickness and are formedSpeedmaster 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.
