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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
 

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Even with those gears, you should be getting better. Start with a good tune up including checking the carb for vacuum leaks.

I have the same combination in my 51 Ford and get about 16 with 3.55 gears.
 
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