The initial automatic transmission to employ a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was launched for your 1948 product 12 months. In usual driving, the Dynaflow used only the prime gear, counting on the torque multiplication in the torque convertor at decrease speeds. https://sethkzeij.blogsvirals.com/33265923/not-known-facts-about-gearbox-auto