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They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy
Standard valve sizes are 2
high-carbon steel construction to eliminate the stretching and breakage often associated with stock bands
Control your engine's movement with a Speedmaster front motor plate
Designed to complement any space
GM Turbo 400 TH400 Output Shaft, Yoke, and Tail Housing Kit - 40 Spline They are five times strongerThese Speedmaster tailshaft housings are designed to fit the stock Turbo 400 transmissions. They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy. Featuring thicker walls and more gusseting than any other manufacturer.
