The first automatic transmission to utilize a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was launched for that 1948 model calendar year. In ordinary driving, the Dynaflow employed only the top gear, depending on the torque multiplication of your torque convertor at decrease speeds. https://gearbox-auto30752.webdesign96.com/34286294/little-known-facts-about-gearbox-auto