The B&M Shift Improver Kit the easiest way to get the stout performance you’ve always wanted out of your automatic transmission And you get two modes of performance to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit. All you need are a few dollars and some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Just ask the thousands of satisfied customers that have installed one in their transmissions!

Application:

• 1991-1993 BUICK COMMERCIAL CHASSIS
• 1988-1988 BUICK LESABRE Automatic Trans 4-Speed Trans THM700-R4/4L60/MD8 Trans
• 1984-1984 BUICK REGAL Automatic Trans 4-Speed Trans THM700-R4/4L60/MD8 Trans
• 1991-1993 BUICK ROADMASTER
• 1990-1990 CADILLAC BROUGHAM Automatic Trans 4-Speed Trans THM700-R4/4L60/MD8 Trans
• 1991-1992 CADILLAC BROUGHAM
• 1992-1993 CADILLAC COMMERCIAL CHASSIS
• 1993-1993 CADILLAC FLEETWOOD
• 1985-1989 CHEVROLET ASTRO
• 1990-1993 CHEVROLET ASTRO RWD
• 1989-1993 CHEVROLET BLAZER 4WD
• 1984-1986 CHEVROLET C10