TCI now has new 4X 4-Speed Automatic Transmissions via Marken Performance. Use either GM 4L80E or 700R4 transmission in non-GM applications. Adapter bell housings are available for small and big block: Ford, Ford Modular, Chrylser, Gen III Hemi, Buick, Pontiac, and Olds patterns. 

   4L80E based also includes an adapter flexplate that uses the engine crankshaft bolt pattern and the GM torque converter pattern.  It is rated to 875 HP and can be used with an original GM transmission controller or a TCI EZ-TCU. 

   Non-electronic 700R4 based also includes an adapter flexplate, transmission cooler, dipstick and all necessary hardware. It is designed with street rodders in mind and will be sold in 2 power levels: 550 HP and 750 HP. Application-specific kits do not require a transmission controller and use a Constant Pressure Valve Body™, eliminating the chance of transmission failure due to a misadjusted TV cable and providing more freedom when setting part throttle shift points. A compact design means the transmission will fit in most applications without the need for tunnel modifications.