Chevy 400 427 Ford 351W Windsor 4.185" 1.015" Dished -16cc Forged Pistons Although the GM heads are

Although the GM heads are good pieces

The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine

Their strong die-cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers

Speedmaster alternator pulleys are manufactured from quality materials to ensure strength and durability

with the performance and durability required to reach the winner's circle

Chevy 400 427 Ford 351W Windsor 4.185" 1.015" Dished -16cc Forged Pistons Although the GM heads areSpeedmaster 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.