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Message: [QUOTE="Powerstroke Racer, post: 399789, member: 13"] Just bought an 05 F550 to tow the Fifth wheel(ya ya ya I bought a six leaker and I am old and wanna go camping with the wife and grand kids)that's for the poking that will come shortly:swordfight: Truck has 4.88's and cruises 70mph @ roughly 2650 RPM, for a 7.3 that is too high but not sure on the 6.0. What have you guys seen that works best gear wise? Gear vendors says not to tow in double over drive so not sure that will be a wise option vs swapping to 410's or 4.30's. Truck and trailer only weighs 22000lbs, my 2000 F250 pulled it fine with 3.73's and a stock turbo but it weighed 2500lbs less than the 550. What is an average acceptable towing mileage for a big fifth wheel? [/QUOTE]

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