B&M 83- GM RWD/4WD w/ 4L60E& 4L80E 31013P Magnum 6-speeds

Magnum 6-speeds

1975-1978 GMC K25

Works up to 12-amps with 12 or 16 volt systems

Transpak for 82-93 TH700R4 Transmission

Optimize use of your engine's power band and improve vehicle run performance and driver gear changes with a rapid response

B&M 83- GM RWD/4WD w/ 4L60E& 4L80E 31013P Magnum 6-speedsShiftPlus, 4L60E and 4L80E B&M'specializes in performance automatic transmissions, torque converters, SFI approved flexplates, legendary automatic shifters, precision manual shifters, and many other transmission products including cast deep aluminum transmission pans, transmission coolers, and automatic transmission fluid. B&M Performance and Off Road has been at the vanguard of the growing automotive aftermarket since the early 1950s. Racers