The next step up from the Shift Improver Kit is the Transpak. It has all the features in the Shift Improver Kit plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 & Chrysler Torqueflite only). Most stock automatic transmissions won’t downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you’re in. With the B&M Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you’ve got a modified engine, and you want additional RPMs, or you’re towing a trailer or driving heavy loads downhill.

Application:

• 1980-1981 BUICK CENTURY Automatic Trans 3-Speed Trans THM350C Trans
• 1980-1983 BUICK ELECTRA Automatic Trans 3-Speed Trans THM350C Trans
• 1980-1983 BUICK ESTATE WAGON Automatic Trans 3-Speed Trans THM350C Trans
• 1980-1983 BUICK LESABRE Automatic Trans 3-Speed Trans THM350C Trans
• 1980-1984 BUICK REGAL Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1982 CADILLAC DEVILLE Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1982 CADILLAC FLEETWOOD Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1986 CHEVROLET C10 Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1984 CHEVROLET C10 SUBURBAN Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1986 CHEVROLET C20 Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1986 CHEVROLET C20 SUBURBAN Automatic Trans 3-Speed Trans THM350C Trans
• 1982-1986 CHEVROLET C30 Automatic Trans 3-Speed Trans THM350C Trans