In the early days of the automotive industry, manual-shift transmissions were the norm. Operating a clutch pedal and a shift lever peering up from the floorboard or mounted on the steering column was ...
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 ...