i plan on doing a 12 spring lift an want to get rid of my ibeam for a straight im gonna be running 39" tires what kinda axle should i go with (ik ill have to do the back to) not going to be a work truck i dont want it to feel like its kinda climbing a hill plz let me know

 

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Get a Dana 60 for the front. The Sterling 10.25 will be fine in the rear. If you put 39s on it, you're going to need a lower gear ratio if you don't want to lose all the power the truck has. 5.13 gears would probably be best.

 

The above post.

I hope milauge is of no concern? My 89 Bronco still has the TTB and 8.8 with 40s and stock gears. Straight six motor and carb. One cylinder is barely firing.

It tops off at 60 MPH, speedo tops at 45 and it is fairly slow on acceleration but not terrible really. Goes through town, trails, hills, highway all fine.

With that being said, I don't think you'll need too terribly deep gears. My front axle is holding up good but I bet if I rode it real hard I would break some stuff. Not that fun to daily drive though, but that's cause it hurts jumping in and out of the damn thing.

 

First of all is it 2wd or 4wd? Converting a 2wd F250/F350 to 4wd is possible but a bit more involved. If it's a 4wd, any front Dana 60 from a 1985-97 F350 will bolt right in with little to no modification. You could probably use a Dana 44 straight axle, but with 39s you will surely be breaking axleshafts and other differential parts... not worth the effort. The factory rear 10.25 Sterling (as said before) will be plenty strong, for gearing I would go with 5.13s or 5.38s.
John

 

yes its 4wd, an whats the last yr for king pins for the f350?

 

I believe '91 was the last year of the kingpin axles

 

so get a dana 60 an put 5.13 gears in it?

 

Yessir. Make sure you change your rear gears also! Otherwise you're going to throw parts all over. I believe the king pin axle ran from like 1985.5 to 1991 or so. So any bricknose 4x4 F350 should have it for sure.

 

dana 60 and sterling 10.25 for sure 4.88s or 5.13s depending on what motor and how much nuts you want to save

 

its going to have a 460 stroked to a 532 with a c6 trans

 

5.13s are what you would want