GM TH400 Turbo 400 Transmission Billet Aluminum Direct Drum Only Whether it's a new build

Whether it's a new build or just general maintenance Speedmaster has what you need to get out on the road

The filter extensions fit Speedmaster deep transmission pans

Speedmaster electric water pumps eliminate unnecessary weight and impeller drag experienced at high RPM

The Speedmaster GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited

but they also lengthen valvetrain component life and reduce wear and tear on valve stem tips

GM TH400 Turbo 400 Transmission Billet Aluminum Direct Drum Only Whether it's a new buildThis TH400 7075 T6 Billet Aluminum Direct Drum is manufactured specifically for drag racing. Includes a Billet aluminum piston. Drum weights 55% less than the OEM drum.