B&M Transpak - GM TH400/375 Transmissions - 20228 power-steering-pumps-and-parts 3 V8 1966 Plymouth Belvedere

3 V8 1966 Plymouth Belvedere II 361/5

5-inch Hooker BlackHeart exhaust systems for 1967-1972 C10 pick-up trucks

External Logging to USB Flash Drive is also available for easy file management

1968-1970 Plymouth Road Runner 383 CID

Covered with our Lifetime Limited Warranty

B&M Transpak - GM TH400/375 Transmissions - 20228 power-steering-pumps-and-parts 3 V8 1966 Plymouth BelvedereOverview: The B&M Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH 400, 350, Ford C 6 and Chrysler Torqueflite only). B&M Transpak kit for 1965 1987 GM TH400 375 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what