Re: Best axle swap for CJ-5.
I will start with that I have a Dana 44 front from a full size jeep and a corp 12 bolt rear with a Detroit locker. I plan to run 37" tires in the future.
What follows is opinion. Many will say they run 37s on vehicles with Dana 44s or less. The clock is ticking on them. They will spend more money than you in the long run if you make the right decisions now.
That being said if you are a serious wheeler (I am) my current axles are not up to the task of 37" tires and serious off roading. Even less up to the task if you have lockers of any type on both ends.
With my set up I would go 35's at the most and would upgrade to Corp 14 bolt in the rear, and a Dana 60 in the front before going to 37s or bigger.
Understand you have Jeep disease. In time you will go to at least the 37s and 99% chance something bigger.
The scout axles are OK up to 35" tires. If these are early 70's axles and I remember right they have a caster of zero. Will have to cut off the ends and reset to proper caster for your particular Jeep and your planned lift. In other words even if free, in the end not cheap and will not hold up to your planned build.
The ford nine in the rear is a good choice for strength if properly done. Also it won't hang down as much as a Dana 60 or Corp 14 bolt.
JP magazine on line has spoken to this a few times as to strengths of different axles and which will stand up to what size tires.
Or if you want an answer you can count on just ask the guys at Desert Fab. They have given me advise that saved me a ton on my build, and they do great work. I already has the Dana 44 front and 12 rear before I started picking their brains.
If I had your Jeep I would go trussed for nine in the rear, and maybe a built Dana 44 in the front. Better yet a Dana 60 with high steer conversion.
Last edited by TRobertsRN; 05-22-2009 at 09:31 PM.
Tom Roberts, Certified Hyperbaric Registered Nurse and Jeep Nut
53 Willys Pickup, 59 Willys Wagon, 83 Diesel 4x4 Suburban, 93 Bronco, 4x4 S-10.
I may not agree with what you say, but I will defend to the death your right to say it.