70244 B&M Performance Auto Trans Torque Converter Lock-Up Control

Provides control of converter lockup through vehicle speed on GM TH-700, 200, 200-4R, 350 and 4L60 transmissions with a lockup converter. Eliminates lock and unlock cycling and premature unwanted lockup avoiding engine lugging and spark knock. Provides lockup at highway speeds for fuel economy. Can be used for lockup operation when converting a non-lockup equipped vehicle to a lock-up style transmission and converter.