GM TH400 Transmission Billet Aluminum Valve Body w/ Engine Braking then it is the installer's

then it is the installer's responsibility to verify fitment

These covers are designed to directly replace your factory timing chain cover

They're made from quality steel

Speedmaster pulley systems work with any type of cylinder head or manifold configuration

GM TH400 Transmission Billet Aluminum Valve Body w/ Engine Braking then it is the installer'sSpeedmaster billet aluminum valve bodies are a direct replacement for your original valve body. These valve bodies shift quickly and incorporate an adjustable pressure regulator. Fully 5 axis CNC machined from billet aluminum, these valve bodies will help your project shed some weight.