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Unread 04-08-2015, 05:31 AM   #1
YJ228
Junior Member
1991 YJ Wrangler 
 
Join Date: Mar 2015
Location: Moss point, Mississippi
Posts: 40
Front AAM 9.5 swap?

I came across the front axle out of a 2004 dodge ram 2500 that has 4.11 gears and I can get the unit for $100 so I'm probably going to go buy it today. Some background info on my YJ, 1991 with a 350 sbc and NV4500 trans, stock dana 30/35 with a SOA sitting on 38x15.50s. I've been buying a few parts here and there and I have a set of alcan 4" lift springs I picked up for $120 from a CL deal. I want to keep the 38s and that's why I'd like to do the swap. My plan is to find a 3/4 or 1 ton rear end that's 4.10 or 4.11 gears to match. Then doing a SOA with the Alcans. From what I have read this AAM is the same as a dana 60 so I think it'll be plenty strong. Has anyone done this swap? If so are there conversion kits out there or do I just need to buy new spring pads and shock mounts and have them welded to the axle? I actually have a stock set of 2500 coil springs from my DD cummins but I'm sure that wouldn't net me enough lift for what I want to do and probably entail alot of work to the yj frame so I've almost scratched that idea. I understand the new axles would be 8 lug and that's fine with me, I'll just buy new rims or a new rim and tire setup when I get to that point. Any advise or constructive criticism would be appreciated. I've had many ideas for my build but I've decided I want to do it right and make it plenty beefy. Thanks

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Unread 04-08-2015, 06:22 AM   #2
bgredjeep
Web Wheeler
1987 YJ Wrangler 
 
Join Date: May 2005
Location: Augusta, GA
Posts: 2,007
I doubt there's much in the way of swap info on this axle. It should be plenty strong (nice upgrade from the d30). Iirc Peterson's used one in the UA JK several years ago when they basically dropped a JKU body on a diesel 2500 rolling chassis. They ran 42s on that one. They are known to eat ball joints in the dodge so I'd count on changing those to start. One you have good joints, I can't imagine they would ever be an issue under the much lighter jeep.

I can't tell from the pics if you will have room to set the perches to match the yj spring width or not. You may need to outboard the springs.
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