4X 4L80E Trans Kit Buick/Olds w/SFI Bell

The TCI 4x Four-Speed Automatic Transmission Series offers 4L80E or 700R4 transmissions for non-GM performance applications. Both feature an SFI-spec adapter bellhousing for compatibility with Small/Big Block Ford, Ford Mod, Small/Big Block Chrysler, Gen III Hemi, Buick, Pontiac, Oldsmobile, and Chevrolet Small/Big Block engines. The 4L80E-based electronic overdrive version includes an adapter flexplate (engine crankshaft bolt pattern, GM torque converter pattern), is rated to 875 HP, and works with original GM controllers or TCI EZ-TCU. The fully mechanical 700R4-based version (550 HP or 750 HP) includes an adapter flexplate, transmission cooler, dipstick, and hardware. Designed for street rodders, its application-specific kits don't require a controller and use a Constant Pressure Valve Body to prevent TV cable failures. Compact design ensures fitment without tunnel modifications.