I have a 1950 ford with a 350 chev engine and 350 turbo tranny. The reas is a nine inch ford with 390 gear ratio. I am getting 9 miles per gallon. I have been told to change the rear gears to help the gas problem. I have also been told to put a 700 overdrive tranny in the car to corrdct the gas mikeage. What is the best solution to use to improve the gas consumption. Thanks
Scott
Scott