Join Date: Sep 1999
Location: Kona, on The Big Island of Hawaii
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Re: Full width 1 ton Chevy axles on CJ 5?
<snip>I have a 1975 Jeep CJ5 with the 304/T18/</snip>
I may be wrong but I'm pretty sure the '75 frame is not boxed and very flexly. I think your looking at alot of work to put these axels on that frame. The one ton axels weight is about 3 times the stock axel and this unsprung weight will rip that unreinforced frame in two after you get a few miles on it. You can either reinforce the '75 (after disassembling to bare frame)or find a '76 or newer frame (already boxed)to start with. This may be something you might want to thing about.
I used a steering arm from Avalanche Engn that bolts to the top of the right side Knuckle for a crossover steering setup, very nice and easy.
Use springs with a spring weight rating for the weight of the front and back of your '5. Using longer springs will also give a softer ride, I'm using Alcan SOA spring on the front that are 5" longer then stock and I also moved the axel forward 2 1/2" to increase wheelbase(rear axel moved back 1 3/4") which helps the ride too. Your replacing all the hangers anyway so you can put them in a different place. If you do this, Think it out very carefully and measure many times before you weld or it will never track right.
Wayne in Hawaii