Thread: Towing with new FORD STX 3.31 axle

Originally Posted by squirell2_2

Lol, yea... maybe I should switch to diesel and get better fuel economy

If you tow more frequently, that would be a good idea lol.

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Originally Posted by chuck9997

I posted this on another forum.. and didn't get much input.. so thought I would ask here.

I bought a new 2013 FORD F150 STX super cab, 2wd, (5.0L, V8 with 3.31 electronic locking RR axle) a few weeks ago. I love the truck and always wanted a FORD full size.. always. I traded in a 2006 Nissan Frontier.

My Nissan actually did a pretty good job pulling my 23 foot WILDWOOD camper. Camper weighs about 3800 pounds empty.. probably about 4500 loaded (no water).. but I was looking for the added comfort of pulling with the bigger FORD. The Nissan was rated to pull 6100 pounds.. the FORD: 8100, The Nissan was 265hp.. FORD: 360hp.. plus going from V6 to V8.

However.. after doing a little (after purchase) looking.. I kinda wish I had bought a truck with the 3.55 or 3.73 axle. I don't really understand what the difference is.. but i see that the towing capacity is about 1000 pounds more than the 3.31.

Anyway.. I already have the 3.31.. and it I think it will pull my present camper with no problems.. just wondering what, and how much.. you guys are towing with the 3.31 electronic lock rr axle? I might wanna move up to a bigger travel trailer someday.

As for the question about the difference, the higher the differential ratio, the more torque you get, and that means the more you can tow. However, the higher the number, the less fuel efficient it is, so you'll get better mpg when not towing with your 3.31. And no need to worry about towing your travel trailer, just do what the other guys said, airbags, weight distribution system, etc. and you'll have no issues with it.