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5" 10 Bolt axle
Speedmaster main caps improve reliability in highly stressed engines by reducing distortion of the main bearing bores
while giving accurate measurements on your oil capacity
The LS (Gen3/4) platform has many design benefits over the earlier SBC engine designs
Chevy SBC 383 ci 6.0" 4.030" 1.125" 0.927" Flat Top Forged Pistons 5" 10 Bolt axleSpeedmaster 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.
