70248 Converter Lockup Controller GM automatic

Fits GM Automatic Trans with Lockup Converter The B&M Lockup Controller provides control of lockup through vehicle speed on GM TH-700, 200, 200-4R, 350 and 4L60 with a lockup converter, Can be used for lockup operation when converting a non-lockup equipped vehicle to a lock-up style. Works with GM automatic transmissions using a lockup style torque converter and an electrical speedometer.