This TCI Universal Lock-Up Kit for GM 700R4 works by referencing engine vacuum to automatically engage or disengage the torque converter lock-up clutch. Vacuum reference can be overridden to engage or disengage lock-up.
This easy-to-install lockup wiring kit for 700R4 and 2004R transmissions from TCI allows hands-free, automatic activation of the torque converter clutch in 4th gear under stable engine operation, and disengages the clutch when accelerating or down shifting. This universal lockup wiring kit is needed when installing a GM 700R4 or 2004R transmission in a non-computer controlled application such as a street rodder, muscle car, or when removing the factory computer in pre-1993 applications that utilize a 700R4 or 200R4 transmission.
Note: This kit contains a gasket for the 700R4 transmission only. If this kit is to be used with a 200-4R, the transmission pan gasket must be purchased separately.