THM400 TH400 400 3L80 Transgo 400-1&2 Reprogramming Shift Kit (SK400-1&2)

Brand: Transgo Other Part Number: TRG-400-1&2 Type: Shift Kit Interchange Part Number: T34169 Manufacturer Warranty: Yes  Manufacturer Part Number: 400-1&2 Country of Manufacture: United States Surface Finish: Professional Grade  Country/Region of Manufacture: United States Universal Fitment: Yes  Vintage Part: No Performance Part: Yes Reprogramming Kit™ With Gear Command™ Fits all 400 1965-on Heavy duty and high performance valve body calibration and  internal upgrades for General Motors TH 400 automatic transmissions. Features: Automatic shift Street or full race Holds 1st and 2nd to any RPM Back-shifts to 2nd and 1st at any RPM Tow&Go™ or competition Also Includes: (2) different size 1-2 shift valves Direct clutch high rate return springs Heavy duty intermediate pressure plate snap ring 3rd clutch dual feed separator plate