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7L V8 1978 - 1981 Mercury Grand Marquis 351/5
7 V8 1977 - 1986 GMC Jimmy 305/5 V8 1975 - 1978 GMC K15 Suburban 400/6
7 V8 1976 - 1978 GMC K25 454/7
8L V8 1984 - 1987 Ford E-150 Econoline Club Wagon 351/5
B&M Transpak - GM TH700R4/4L60 Transmissions - 70235 transmission-and-drivetrain 7L V8 1978 - 1981Overview: 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 1982 1993 GM TH700R4 4L60 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
