The first automatic transmission to implement a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was introduced for that 1948 product year. In usual driving, the Dynaflow used only the top gear, depending on the torque multiplication of your torque convertor at lower speeds. The Dynaflow https://codysvvtp.smblogsites.com/34161450/gearbox-auto-can-be-fun-for-anyone