RTS SuperMax Powerglide Transmission Cases RTS now offers aftermarket TH400 and Powerglide aluminium transmission cases! They are constructed from A356-T6 heat treated aluminium through a permanent mould process which increases strength and ductility over the OEM designs. These are intended to be used in street/strip or high horsepower drag race applications. Features include: Heavy duty 1-piece casting Thickened oil pan flanges Beefed-up oil pump area Heli-coiled oil pump mounting holes Redesigned oil passages Chevrolet bellhousing Stock dimensions- All powerglide parts function This case is in the process of being SFI approved
