Hi Guys!

How can you tell what type of rear end (gearing) you have? The Owners manual just gives specs for all of them. BTW, I have an '05 FX4 w/towing package, 5.4L

Thanks in advance!

NCC

 

As you have the 05 with 5.4, you have a 9.75" rear. Look at the door sticker and get the axle code. Here are the codes.

19 - 3.55 non-limited slip
25 - 4.10 non-limited slip
26 - 3.73 non-limited slip
27 - 3.31 non-limited slip
B5 - 4.10 limited slip
B6 - 3.73 limited slip
H9 3.55 limited slip

Front is an 8.8" with the same ration, but always an open diiff.

 

Thanks for the info!!

I have a B6 3.73 LS. I take it from reading these forums that that is good enough to pull my 7000GVW trailer just fine...

Thanks!

NCC

 

Assuming that is the max weight, it has brakes, you have a weight distribution hitch, and don't have oversize tires, then yes you should be okay.

 

Factory 18"s for tires, but not sure about the WD hitch. I am using the Ford tow package hitch, with a Reese insert. Looking at pics and reading, I think it is a weight carrying setup.....do you concur?

NCC

 

If it looks like those listed under the weight distribution section of their site, then yes. Otherwise if it just th ball on a receiver insert, no. The hitch is rated at 500lb tongue weight and 5000lb trailer weight without a WD hitch. With it it is rated to what it states in the owners manual.

 

Here are the 3 most common styles of weight distributing setups.

Equal-i-zer


Round Bar WD


Trunion WD


Then the old common drawbar/ballmount that is weight carrying.

 

Thanks....it appears that I may need to invest in a WD hitch then to be as safe as possible... more money...

NCC

 

More money, but worth it if you plan on towing that travel trailer. The WD hitch distributes the load more evenly on both the axles of the truck. It makes the truck handle better under a load. But I would buy one from a Hitch shop or Camper shop and have them set it up for you. Some WD hitches need to be set up properly or they won't help much at all. Do some searching on the internet about how to set one up and you will get a better understanding of how and why they work.

 

great !!.. with the info on this thread, my rear end is B6, 3:73 gears. with a 145" wheel base, 5.4L, 4x4, supercab, my tow rating is 9,300 lb. With my empty trailer weight of about 6,264 lb, added weight of upmost max 1,500 lb. (probably really about 1,000 lb.) i should be ok. I do have a decent reese WD hitch system.

total GVWR of 15,000 is allowed too.

I feel better now !

Thanks y'all !

 

The weight posted in the trailer is called a dry weight, and does not include any add ons or options like awning, air unit, Propane tanks, spare tire and carrier if you have one, no water in any of the tanks, etc. My trailers dry weight is 6850, and with very minimal supplies in it hooked to my 07 F150 Screw 5.4 The combo weighed in at 14,020 on the CAT scales at a truck stop. You should be within legal limits with the WD hitch set up properly so all the axle weights are ok, but you will be taking your truck very close to its limits! This will be very hard on the truck, and will take its toll over time. Better put a tranny gauge in it and watch it closely on the big hills! If you are going to do allot of towing you should consider a Super Duty, with a V10 or diesel.

 

P.S. make sure you get a sway control also!