Chevy SBC 383 ci 6.0" 4.060" 1.125" 0.927" Flat Top Forged Pistons and have a black oxide

and have a black oxide corrosion-resistant finish

Benefit from an easy installation and gain in horsepower

All kits come complete with 12 point nuts and hardened parallel washers for an even load distribution and accurate torque readings

Speedmaster aluminum timing covers are the perfect way to add strength and durability to the front of your engine

reducing the load on all internal components

Chevy SBC 383 ci 6.0" 4.060" 1.125" 0.927" Flat Top Forged Pistons and have a black oxideSpeedmaster 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.