Transgo Performance Shift Kit




GM 4L80E and 85E   Kit: 4L80E PSK  Automatic Shifts
4 Speed Rear Drive              
Kit: 4L80E-S PSK   Stick Shift

1991 to 2004  5.7, 6.0, 7.5, Diesel, Gas Trucks and Vans.

Features: Pro-Street or Race with Class:  Heavy Duty & Big Horsepower Rigs, Manually holds 1st-2nd-3rd to any RPM. Manually downshift to any gear at any speed with selector. Stops direct clutch burn up. Patented valve prevents runaway pressure damage and low pressures due to worn boost valve.

    4L80E-S Stick Shift:  Has vacuum modulator. All shifts are made by moving selector. No shifts are automatic.  No computer is used.
Great for transplants.