Chevy 400 427 Ford 351W Windsor 4.125" 1.015" Dished -16cc Forged Pistons That means you get more

That means you get more airflow headed down the carburetor or throttle body and into the combustion chamber

The oil pan helps to cool the oil thru its contact with the outside air

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

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 That means you get moreSpeedmaster 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.