THM400 TH400 400 3L80 TH375 TH475 TRANSGO REPROGRAMMING 400-1&2 KIT.

THIS IS A TRANSGO REPROGRAMMING 400-1-2 KIT FOR THESE GM AUTOMATIC TRANSMISSIONS: 

• THM400 AND THM375 (3L80)
• THM475 (3L80-HD)

THIS KIT WILL WORK ON ALL THE ABOVE TRANSMISSIONS 1965-UP. 

THIS KIT WILL GIVE YOU THESE FEATURES,

1. STREET OR FULL-RACE AUTOMATIC SHIFTS.
2. HOLD 1ST AND 2ND TO ANY RPM.
3. BACK-SHIFT TO 2ND AND 1ST AT ANY RPM.
4. TOW & GO OR COMPETITION COMBINATION.

THIS KIT IS A MUST FOR ANY MUSCLE CAR, RV, 4X4 OR DAILY DRIVER TO ADD CRISP SHIFTS AND EXTREAM DURABILITY TO YOUR VEHICLE.