The main automatic transmission to utilize a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was launched with the 1948 model 12 months. In normal driving, the Dynaflow utilised just the major gear, counting on the torque multiplication of your torque convertor at reduced speeds. https://gearboxauto87317.ambien-blog.com/40603187/gearbox-auto-fundamentals-explained