Chevy 400 427 Ford 351W Windsor 4.125" 1.015" Dished -16cc Forged Pistons or choke control to restrict

or choke control to restrict airflow

and a 1:1 fuel pressure rise from the boost reference port

thick flanges that are heavy enough to maintain header integrity

8" and 9" rear ends

We provide a threaded grease fitting on top and a drilled flex ball for better lubrication plus

Chevy 400 427 Ford 351W Windsor 4.125" 1.015" Dished -16cc Forged Pistons or choke control to restrictSpeedmaster 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.