The main automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was launched for the 1948 product calendar year. In regular driving, the Dynaflow made use of only the prime equipment, counting on the torque multiplication of your torque convertor at https://cashbrbnv.blogrelation.com/40009899/what-does-gearbox-auto-mean