Automatic trans shifting

[Alan Roehrich]

In Stock Eliminator, cars originally equipped with automatic transmissions that were shifted electronically by the computer as delivered from the factory can use "E-shift" systems, even on transmissions that were not original to the car, and did not originally have "E-shift". So a late model EFI car can use "E-shift", but an older carburetor equipped car cannot. Some older cars are equipped with "auto 1-2" valve bodies. Those cars leave the starting line with the shifter in 2nd, but the car leaves in 1st, then shifts to 2nd at a pre set RPM. The "auto 1-2" feature is controlled by the governor and the vacuum modulator in most cases.