I have a 1991 F 250 Super cab im looking to do a 6" lift. As i am Starting to shop around they all seem about the same so what are the good and bad brands in the industry? do i go with a spring lift or a i beem lift?


i kno very little about the subject please in form me what to look for and how to choose

 

well before you buy a lift there are a couple of questions you need to ask yourself..

First: What am I going to be doing with my truck once it is lifted. Will I be towing, using it as a daily driver, or will I be off road-ing with it.

Second: After answering the first question how big of tires do I want to put on the truck.

Once you have the answers to those questions there are other things you have to consider. Like the fact that once you lift your truck the on road characteristics of it are going to change considerably. And once you go beyond 33"-35" tires you need to think about re-gearing the truck and improving your brakes. Also with the bigger lifts your differential angle will have to be addressed cause to much angle on your drive line is a recipe for disaster. You will also have to consider if your slip yokes can handle the added distance from your transfer case to the axles. and being an F250 you are going to want to look into doing a solid front axle conversion before you even think about a lift. I have a 4" spring lift with 35" tires and I think that is about max that the stock front end can handle any more than that and you really need to do the conversion.

 

a dana 60 solid front axle swap is rexcomended if you will be taking it off road any, the stock TTB is terrible, saw a few trucks at the mudhole last night with like 8in lifts and they looked terrible. Tire size are the big question here my friend, if you want 35s go with the 4in lift, much more stable and all you will need. If you want to go 37s you need the dana 60 swap, but if you want to choose i lift i would go with a rough contry with all the options, dont skimp out on the lift because it wont be great.

 

i was thinking of going with a 6" lift with 33" and ill be off roading with it mostly well daily driver / off roading

 

The limits of the TTB (Twin Traction Beam) Dana 50 are a little different from the Dana 44 depending on what you have. The F250s of that era could have either. The Dana 50 can handle a beating and 35" tires, while the Dana 44 can only handle 33" tires offroad. Any bigger and you run into problems breaking shafts and joints.
The Dana 44 (and Dana 44 HD) straight axle from the late 70s can handle up to 38" tires without trouble.
However, I don't know what you mean by an I beam lift or spring lift. Kits will either come with a lift using more springs, or lift blocks if that's what you mean. Lift blocks exceeding 4" can create axle wrap from having so much space between the springs and axle. This can be corrected with ladder bars however.
I have a personal preference for the straight axles myself, as they are tougher and more stable.
The other option, depending on what you plan to do, is the Dana 60 straight axle out of an F350 from that era can handle bigger tires than 38" and you will rarely run into any problems breaking parts. The downside is that most people want $1000 for a Dana 60, while you can get the Dana 44 straight axle for $200 most places.
If you plan on keeping the TTB axle, Skyjacker, Rough Country, and Super Lift all make good products.
I'm going to tell you right now though, that 35" tires on a 6" lift is going to look goofy. 37" tires will probably look the best with a 6" lift, but that is beyond the limits of the Dana 44 TTB or Dana 50 TTB

 

I beam i dont know either i read it in a description some where spring lift i think i was referring to leaf springs but i was really tired when i typed that i may have mis read it the whole thing
im not looking to axle swaps and gear swaps and so on im trying to keep it simple.
i want a truck that a little taller and some 33" or 35"

 

If that's all you're looking for, A leveling kit will let you fit 33" tires. A 4" lift will let you fit 35" tires with ease. If you use 35" x 12.5" tires, I would suggest getting a set of 10" wide rims with 4" backspacing so that your tire doesn't rub your leaf springs in the front.

 

how do i tell if i have a solid axle? is 6" getting in to the modification department such as gears axle swaps and drive shaft stuff?

 

An F250 of this age didn't come with a solid axle. 6" of lift doesn't mean you have to do axle swaps or gears. Not sure about driveshafts. But the gears and axle swaps are based solely on what you will do with the truck once it is lifted. If you put big tires on it and beat it offroad, its going to need tougher parts

 

Unless someone put a Dana 60 in your truck, it has a D44HD or the D50. BOTH are Independent(Twin Traction Beam).

If all you want to run is 33" tires a leveling kit will work fine.
here is my brothers 97 and 33s(STOCK height). A lil crammed but it works. All it needs is a leveling kit

 

thats what it was I beam drop brackets what are those advantage or dis avatages of them compared to leaf springs.
when shopping around on summitracing.com you can narrow it down to the primary lift in the front and rear.
I beam drop bracket up front or leaf sring
drop brakets in the rear or spacer
those seem to be the options
if im not mistaken

 

like the truck idk how i feel about the looks of the leveling kits i kinda like the rear to sit a little higher

 

The kit for a TTB axle should come with a drop pivot bracket for the center where the 2 sides meet. in order to lift the truck away from the axles, you need either lift blocks or leaf springs.

 

i would say go with a 4in lift and stick with what you got and get 35s, the 4in lift will look like a 6in on an f150, any bigger and its weird looking. With that much lift and tire you will be stable and the truck will hold up nicely and look great

 

Its hard to make these trucks look bad. However, a lift is going to make the truck tippyer anyway so i wouldn't worry about stability. if the OP wants to go with a 6"