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Old 01-07-2011, 01:41 PM
Gravel Rat Gravel Rat is offline
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Join Date: Jul 2002
Location: British Columbia
Posts: 9,544
Your out of luck Ron, Ford never posted fuel mileage numbers for F-450-550 trucks I don't think the gov't requires it.

The F-450/550 trucks only come with two gear ratios 4:30 and 4:88, my F-450 has 4:88 gears open diff, it was spec'ed for towing a trailer.

You can find out what gear ratio your truck has their should be a white tag on the center chunk on the rear diff.
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