The 1st automatic transmission to implement a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was introduced for your 1948 model yr. In typical driving, the Dynaflow employed only the prime gear, depending on the torque multiplication of your torque convertor at reduced speeds. The Dynaflow https://gearboxauto08529.qodsblog.com/33813251/gearbox-auto-an-overview