GM Turbo 400 TH400 Billet Steel Intermediate Clutch Sprag-Outer Race also known as the GM

also known as the GM 8

Aluminum also promotes faster heat dissipation for further cooling of your transmission

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

these Speedmaster valve locks will provide the reliability that you've been looking for

You need guideplates to keep your pushrods from deflecting under high-rpm conditions

GM Turbo 400 TH400 Billet Steel Intermediate Clutch Sprag-Outer Race also known as the GMSpeedmaster heavy duty intermediate clutch outer race delivers more torque capacity of any OE race. High torque loads cause the race to fracture at two stress points: the radial lube holes that contact the rollers and the sharp inside corners at the base of the outer splines. Design improvements to the splines, plus upgraded material and a custom manufacturing process, further improve durability to make this heavy duty race the best option available