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Old 10-04-2009, 07:21 PM
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Gear Question

I recently bought a new to me 2003 7.3 F-250. The guy I bought the truck from had the gears changed to 4.10's. Would it be to my benefit to change the gears back to stock if I wanted to get the best gas mileage possible? The truck has a 6inch lift with 35 inch tires. Or what would be the best setup for maximum fuel economy? Any help would be greatly appreciated since I am new to the diesel community. Thanks!!
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Old 10-04-2009, 07:47 PM
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The different gears are to account for the tire size. if you went to stock you'd feel like you had no power and eat even more diesel..
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Old 10-04-2009, 10:29 PM
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Thanks for the fast response!
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Old 10-05-2009, 11:51 AM
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Stick some 37's on there...

I don't know if it would be worth it to spend the money to change to 3.73's.
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Old 10-05-2009, 03:01 PM
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That was another thought that I had. Looking to buy a chip very soon which should help with the fuel mileage a little bit. Just wanted to know if there would be a big difference between the stock gears vs. the 4.10's
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Old 10-05-2009, 03:23 PM
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No not a big difference..
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Old 10-05-2009, 05:13 PM
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Good to hear thanks for the input!
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Old 10-05-2009, 08:09 PM
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Just means you are all set up for 37's now
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