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378" (35mm) axle shaft35 spline axles:Requires bearing PCE231
Speedmaster aluminum pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs
faster acceleration and top-speed performance
Speedmaster Aluminum Water Pump Pulley
The 6-pinion front planetary is constructed from investment cast steel
GM Turbo 400 TH400 Aluminum Tailhousing with Bushing 378" (35mm) axle shaft35 splineThese 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.
