Chevy 400 427 Ford 351W Windsor 4.125" 1.015" Dished -16cc Forged Pistons The oil pan helps to

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

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

thick flanges that are heavy enough to maintain header integrity

or choke control to restrict airflow

This gives you the ability to run a much stronger and reliable transmission to your high performance engine

Chevy 400 427 Ford 351W Windsor 4.125" 1.015" Dished -16cc Forged Pistons The oil pan helps toSpeedmaster 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.