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Speedmaster only offers planetary gear sets provide superior torque output for modern high-output motors
The right choice is critical for your engine and your wallet--choose Speedmaster iron distributor gears
Designed to complement any space
They are five times stronger and more ridged than stock because they are made from aircraft grade aluminum alloy
GM Turbo 400 TH400 Output Shaft, Yoke, and Tail Housing Kit - 40 Spline Speedmaster only offers planetary gearThese 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.
