Kickdown Kit – GM TH-700-R4

TH-700R4 transmissions will downshift from fourth to third gear anytime there is more than about half throttle (except Corvette and some H.O. Camaros and Firebirds). As a result, it is impossible to cruise at high speeds in overdrive (fourth) gear. This kit prevents a forced part throttle kickdown from fourth to third gear, and allows cruising at higher speeds in overdrive. The transmission will only kick down from fourth to third gear at 3/4 throttle.

TH400 Kickdown Switch

When swapping the TH-400 into any vehicle, this kit makes installation of the transmission kickdown feature a snap. Mount to either a TH-700 or TH-350 throttle cable bracket.

Application:

• 1973-1975 BUICK APOLLO Automatic Trans 3-Speed Trans THM350 Trans
• 1971-1973 BUICK CENTURION Automatic Trans 3-Speed Trans THM350 Trans
• 1973-1981 BUICK CENTURY Automatic Trans 3-Speed Trans THM350 Trans
• 1975-1975 BUICK CENTURY
• 1975-1980 BUICK ELECTRA Automatic Trans 3-Speed Trans THM350 Trans
• 1975-1980 BUICK ESTATE WAGON Automatic Trans 3-Speed Trans THM350 Trans
• 1970-1972 BUICK GS Automatic Trans 3-Speed Trans THM350 Trans
• 1971-1980 BUICK LESABRE Automatic Trans 3-Speed Trans THM350 Trans
• 1973-1981 BUICK REGAL Automatic Trans 3-Speed Trans THM350 Trans
• 1975-1978 BUICK RIVIERA Automatic Trans 3-Speed Trans THM350 Trans
• 1975-1975 BUICK SKYHAWK
• 1976-1980 BUICK SKYHAWK Automatic Trans 3-Speed Trans THM350 Trans