GM Turbo 400 TH400 Output Shaft, Yoke, and Tail Housing Kit - 40 Spline and corrosion-treated

and corrosion-treated

These Speedmaster crankshafts are precision-ground and micro-polished to exacting tolerances

along with optimized winding

They include a strong bonding process

You can also use them as a manifold cover when you store your engine

GM Turbo 400 TH400 Output Shaft, Yoke, and Tail Housing Kit - 40 Spline and corrosion-treatedThese 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.