When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Wel, I just bought a new to me V-10 (EXT CAB/4X4) although have not picked up yet. My only concern is the 3.73 rear diff. My cuurent camper only weight 5,500 lbs out the door but if I bopught a new camper, let's say that weighed 7,500 lbs would I need to change out the rear diff. I paid 19,000 for the truck with 22,000 miles, I hop I got a good deal!!!!! Thanks for any input.
My 2001 2v V10 (310hp version) hauled a 7500lb travel trailer no problem with the 3.73:1 rear gears. It would have been better in the tall mountains with 4.30:1 but for the few miles I had to spend up there the taller ratio did just fine. If you lift the truck and go to larger diameter tires, you need to consider a re-gear to 4.10/4.30/4.56/4.88:1 to get the CRUISE RPM back in the 1975-2250 rpm range.
Your truck (provided it has the trailer towing package) was rated by Ford to tow 10,000 pounds, so you're good to go up to that amount. If you change to 4.30 gears you'll still be rated to tow 10,000 pounds. Where the 4.30's are more useful is if you're towing in the hills/mountains, so it really boils down to where you'll be going with it and how often.
I had a '99 with 3.73's for 6 years that I towed a 7k trailer with and had no problems, and that was with 33" tires on it. That being said, my current truck has 4.30's and now the 7k trailer feels like 3k; the truck handles it with much more authority.
The manual states 10,800 for 3.73 ratio with the V-10. On thing that I did not understand was that the manual for my set up did not state the weight for a fifth wheel. Everyother configuration mentioned regual towing and fifth wheel towing???
Regarding 5th wheel towing, the 3.73 gets you maximum trailer weight of 10,400 lbs, the 4.30 gets you a maximum trailer weight of 12,000 lbs if it's a F250, 13,400 if it's a F350. These numbers are from the 2003 Ford Fleet Towing Document.
You'll have no problem towing it, it is well within the capabilities of the truck. Now, with that said, how much authority you want to pull it with is a matter of personal preference and you can never have TOO much power.
I pulled my parents 9K worth of boat with mine and it did fine. If I was doing routinely, I would DEFINITELY have wanted 4.30's. I normally am towing between 3 and 5 K with mine and it has absolutely no problem with it.
I tow a 8000 pound 5th wheel and have no problems. I tow on flat land and I tow in the mountains. Just take the overdrive off and have at it. Like mentioned before if you plan on lifting or getting bigger tires I would say regear.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.