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 ...

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 ...

For the price of the trans pan, valve body, and separator plate gaskets, the firmness and quickness of GM Turbo 400 upshifts and downshifts can be dramatically improved, according to Darrell Young's ...

In the 1960s, General Motors started manufacturing a new three-speed automatic transmission named the Turbo Hydra-Matic 400 (TH400) that saw first use in 1964. Commonly called the Turbo 400, it was so ...