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TCI 4x Four-Speed Auto Transmissions Adapt 4L80E and 700R4 for Non-GM Applications

TCI 4x Four-Speed Auto TransmissionsTCI has expanded its drivetrain lineup with the new 4x Four-Speed Auto Transmission series that allows the use of a popular 4L80E or 700R4 transmission with non-GM performance applications.

Both the 4L80E-based and 700R4-based versions of the 4x Four-Speed feature an SFI-spec adapter bellhousing for easy installation of the transmission behind a Small or Big Block Ford, Ford Mod, Small or Big Block Chrysler, Gen III Hemi, Buick, Pontiac, Olds or GM engine.

The electronic overdrive 4x Four-Speed Auto Transmission, Electronic 4L80E-based also includes an adapter flexplate (where applicable) 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™.

The fully mechanical 4x Four-Speed Auto Transmission, non-electronic 700R4-based also includes an adapter flexplate (where applicable), transmission cooler, dipstick, TV cable and all necessary hardware. It is designed with street rodders in mind and is sold in two power levels: 550 HP and 750 HP. Application-specific kits do not require a transmission controller and use a Constant Pressure Valve Body™ to fix line pressure with no chance of encountering low line pressure conditions – a common source of 700R4 failure. A compact design means the transmission will fit in most applications without the need for tunnel modifications.

Now Available to Order 

Quick Facts

Product: TCI® 4x Four-Speed™ Auto Transmissions
Part #: See Application Charts
Street Price: $2,849.98 – $4,599.97

Social Media Pitch: TCI® 4x Four-Speed™ Auto Transmissions enable use of a 4L80E or 700R4 transmission with non-GM applications

Features & Benefits:

  • Adapter bellhousing for installation behind non-GM engines
  • Electronic 4L80E-based can be used with original GM controller or TCI® EZ-TCU™.
  • Non-electronic 700R4-based does not require transmission controller
  • Non-electronic 700R4-based uses Constant Pressure Valve Body™ to eliminate low line pressure conditions