The main automatic transmission to make use of a torque converter (in place of a fluid coupling) was the Buick Dynaflow, which was released for the 1948 model 12 months. In usual driving, the Dynaflow utilised just the top gear, relying on the torque multiplication in the torque convertor at https://gearboxauto31852.boyblogguide.com/33155815/top-guidelines-of-gearbox-auto