B&M 70239 B&M Shift Improver Kit.
1982-1993 GM Turbo 700R4 (4L60) transmission shift kit.
Recalibrate your 700R4 automatic transmission for extended life and optimum performance!
Eliminates shift overlap and excess wear on clutches and bands due to slippage and provides crisp shifts on any stock 700R4 automatic transmission.
Includes detailed installation instructions.
Does not require transmission removal to install.
Choose between two modes included in the kit that best suits your application.
The B&M Shift Improver kit is the easiest way to get the stout performance you've always wanted out of your Turbo 700R4 automatic transmission.
All you need are some hand tools and an afternoon to turn your transmission into a B&M tuned transmission!
STAGE 1. HEAVY DUTY: Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles.
STAGE 2. STREET-STRIP: Provides positive shifts for high performance street applications and drag racing. This level is for the enthusiast who wants the hardest, quickest possible shift.
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