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These kits reduce the power-robbing windage created from the excess oil draining past the rotating assembly and keeps the oil flowing where it is needed most
Speedmaster conversion steel bell housing couples the Nissan RB25/ RB30 engine to your Turbo 400 automatic transmission
Nitrous/injector bosses
Speedmaster GM automatic transmission parts are manufactured using the highest-quality materials for strength and durability
GM TH400 Forward Clutch and Direct Clutch Assembly w/o Clutches - STD These kits reduce the power-robbingThe Speedmaster forward drum and direct drum assembly are designed to withstand high horsepower with their upgraded 36 element sprag design. Speedmaster GM automatic transmission parts are manufactured using the highest quality materials for strength and durability.
