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Speedmaster designed a one-piece forged steel turbine hub to prevent ballooning
Made from high quality steel and will install without any modifications
Superior engineering
They also feature precision-rolled threads
contributing to the overall efficiency and performance of your engine
GM TH400 Turbo 400 Transmission Billet Aluminum Direct Drum Only Speedmaster designed a one-piece forgedThis TH400 7075 T6 Billet Aluminum Direct Drum is manufactured specifically for drag racing. Includes a Billet aluminum piston. Drum weights 55% less than the OEM drum.
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