Join Date: Aug 2001
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Re: YJ spring over conversion
If you are going SOA with your stock springs then you should expect about 5-5.5" of lift. I think that with a SOA on stock Springs with correctly installed bumpstops running 35's is not out of the question. If you go SOA with 2.5" springs, you could be up in the 36,37,38" tire range.
Mach2 nh has a really nice YJ set up on SOA, maybe he will post a photo of it.
If you plan on going any bigger than 33" tires you are going to be taxing your stock axles, and damage to them is not a matter of if, but more of when.
Also, if you are going to SOA on Stock springs, you are going to need some sort of traction bar to hinder spring wrap, otherwise your rear driveshaft won't last very long, and nether will your springs.
I would say that going with a SYE is a must, and then getting a CV style drive shaft... A good hit for this is to look for a late 80's Waggoneer in a Junk Yard. Grab the front drive shaft out of it, and have it retubed.. That will make a good rear for you.
Does your Jeep have a 6 cyl, or a 4 dinger in it. If you are going with 33-35" tires, I would say 4.10:1 R&P if you have a 6 cyl, and 4.56:1 if you have a 4 dinger.