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They work under the same principals as OEM tanks
Convert the Speedmaster Powerglide tail housing to accept a TH350/Powerglide yoke with the billet steel tail housing adapter
but the real magic is in the elastomer beading applied to the gasket face
Speedmaster high quality aluminum replacement air horn kit to suit downdraft manifolds
Those Speedmaster headers feature 3/8 in
GM TH400 Forward Clutch and Direct Clutch Assembly w/o Clutches - STD They work under the sameThe 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.
