The very first automatic transmission to employ a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was launched for your 1948 model calendar year. In usual driving, the Dynaflow employed only the leading equipment, depending on the torque multiplication of your torque convertor at decrease speeds. https://gearboxauto21963.dailyhitblog.com/39213902/the-ultimate-guide-to-gearbox-auto