Part-throttle driveability can often be improved by changing to a vacuum modulator designed for higher shift points (General Motors and FoMoCo products only). Modulators displaying a red band are used ...

It was a matter of necessity the GM Turbo-Hydramatic 700-R4 transmission ever happened at all. GM’s powertrain engineers were handed a challenge amid higher fuel prices and tougher government ...

General Motors’ Hydramatic Division can take credit for having designed and produced the most rugged and dependable domestic automatic transmissions ever done. In fact, the Hydramatics are so darned ...

"Kickdown" and "TV" cables aren't really the same thing. Let's take it from the top: Many old-school automatic transmissions use both a governor and a vacuum modulator to help regulate automatic shift ...