The initial automatic transmission to implement a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was released with the 1948 model year. In regular driving, the Dynaflow used only the top equipment, relying on the torque multiplication in the torque convertor at reduce speeds. The Dynaflow https://gearbox-auto20741.madmouseblog.com/14273396/the-fact-about-gearbox-auto-that-no-one-is-suggesting