Is it possible to replace the 4-speed with a transmission with Overdrive on a 1979 Ford 400 motor?

Answer

It's possible, but it wouldnt hold up very long. a 400 is a high torque but low horsepower motor and most tranny's wont take high torgue levels

First answer by aron anderson. Last edit by 1987crownvic50. Contributor trust: 39 [recommend contributor]. Question popularity: 79 [recommend question]