GM TH400 Forward Clutch and Direct Clutch Assembly w/ Carbon Fiber Clutches - STD This body has a much

This body has a much larger diameter then your existing throttle body

Get rid of those old fuel bowl floats and upgrade to one of these Speedmaster carburetor floats

Transmissions are the most essential component for putting power from your engine to the wheels

Engineered for durability and precision

These Speedmaster aluminum pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

GM TH400 Forward Clutch and Direct Clutch Assembly w/ Carbon Fiber Clutches - STD This body has a muchThe Speedmaster forward drum and direct drum assembly are designed to withstand high horsepower with their upgraded 36 element sprag design and carbon fiber friction plate material. Speedmaster GM automatic transmission parts are manufactured using the highest quality materials for strength and durability.