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The absence of a limited slip is not a real big deal if you don't do a lot of off-roading or snow driving. Personally, I think it silly not to have one on a 4x4 but it wouldn't be a deal breaker. The Ford LS unit is not the best out there anyway.
When I got my 2005 Limited the dealership had two, one with limited slip and very limited options, and one that was a Limited and all options but limited slip. I will add someone's limited slip to my X, but not Ford's.
When I swapped my gears from 3.73 to 4.30 the shop asked me if I wanted to add a LS to the diff...prices ranged from ~$450 for the Ford LS to ~$700 for an Auburn LS...
In the end I did NOTHING and kept my open diff...I think of it this way...I have a four wheel drive...if my rear end breaks free and leaves me stranded in mud, wet grass or gravel...I simply engage that front axle ~12' away and whalla...no more issues...
I live in a northern climate with moderate snow/ice...I also frequent numerous campgrounds with unimproved roads/campsites that I have to PUSH my 9000# TT in reverse into...I have YET to get stuck with this truck...like I said...four wheel drive is at the touch of my fingers...
If I only had a 2 wheel drive...a LS would be mandatory IMO...but since it is a 4x4...and if you like the truck in every other sense...don't worry about it not having a LS...
FWIW...my axle code now is a 33 even though I do not believe Ford ever sold an Ex from the factory with that axle code!...hehe...
Also what Ford considers the towing 'package' on an Ex is the addition of the extendable towing mirrors and rear sway bar...the other items that 'other' manufacturers consider towing package items like rear towing receiver, 7 way plug, pre-wired for brake controller, heavy duty battery, larger alternator and radiator, etc...are all STANDARD on an Excursion...
I bought a 2005 V-10 3.73 Open Diff 4X4 about 4 years ago to use as my daily driver. I live right on Lake Ontario (tons of snow). I have never had a problem with traction, even in the worst lake-effect blizzards. These trucks are extremely heavy, and with four-wheel drive, you should be fine, LS or not. I love this thing. It is thirsty, though.
Four wheel drive in a slippery situation is two wheel drive (one front, one rear) in a non limited slip application. At least an L.S. in the rear will give you three wheel drive.
Four wheel drive in a slippery situation is two wheel drive (one front, one rear) in a non limited slip application. At least an L.S. in the rear will give you three wheel drive.
Thankfully my two wheel drive (as X describes it) has gotten me into and out of every slippery condition I have come up against either loaded with my TT or on the deep loose beach sand of the Outer Banks or the snow and ice of northern Indiana!
My point and others is that LS shouldn't be a deal breaker for the OP...while having a LS is a requirement for many...I don't view it as a big deal personally...
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.