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Old January 1st, 2013, 09:10 PM   #1
YJ Ben
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Default Jeep Yj axle swap

Well i've finally learned my lesson after breaking my dana 35 for good this time. I looking for a new rear axle. I've heard of 8.8 swaps and stuff to the nature, but i really want to build something that i won't have any problems with. i was looking for a custom dana 60 or high pinion ford 9''. Just looking for some suggestions. Thanks
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Old January 1st, 2013, 09:14 PM   #2
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nothing wrong with 8.8 they work great in yj's or tj's
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Old January 1st, 2013, 09:40 PM   #3
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nothing wrong with 8.8 they work great in yj's or tj's
I agree. Very strong axle with plenty of aftermarket support. Unless you're running over a 37" tire I'd go with an 8.8 comfortably. Easy swap as well and won't cost a ton, nice benefit.
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Old January 1st, 2013, 10:05 PM   #4
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i want to run 35 to 37s i also am running 4.6 stroker around 300 hp. i just sick of the axle breaking.
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Old January 1st, 2013, 10:12 PM   #5
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Personally I'd say the 31 spline 8.8 would handle that, but if you're not comfortable with that then go to a 60 or shaved 14 bolt.
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Old January 1st, 2013, 10:18 PM   #6
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I agree with them. An 8.8 will handle 35-37s all day without issue
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Old January 1st, 2013, 10:28 PM   #7
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i guess the main thing is i figure out what my plans are for the jeep. i know for sure down the line i would like to put a gen 3 or 4 ls engine in it. do you think it could handle that much abuse.
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Old January 1st, 2013, 10:53 PM   #8
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I slid my foot off the clutch @3500rpm about 2 weeks ago in 1st gear with a 4.0/ax15/231j/sye-cv shaft, 35" km2s and a 4.11/limited slip/31 spline 8.8. Nothing Broke! I didnt pretzel up my ladder bar....

I have beaten it hard, most of my jeep friends have an exact copy of what I have and they beat them hard. Great axle! I cant see a reason to spend a pile of money on a 9" for 35"/37" tires.

There are more than few 500hp hot rods burning good rubber with a ford 8.8.
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Old January 2nd, 2013, 06:39 PM   #9
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If I was you I would put a gm14 bolt in it. I had a Dana 60 in my yj with the stock 4.0 and broke 2 sets of stock axles and one set of chromoly shaft before I switched. The 8.8 seems like a waste of money to me.
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Old January 2nd, 2013, 07:01 PM   #10
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Different ball game, but my Mustang would yank the tires and run 10s with a 31 spline 8.8.
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Old January 2nd, 2013, 07:22 PM   #11
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My close friend has ran his 8.8 on 35" boggers for the past 3 years with a lunchbox in a yj with a 5.3l and its never skipped a beat. 8.8 IMO
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Old January 2nd, 2013, 07:49 PM   #12
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Quote:
Originally Posted by little_yj_95 View Post
If I was you I would put a gm14 bolt in it. I had a Dana 60 in my yj with the stock 4.0 and broke 2 sets of stock axles and one set of chromoly shaft before I switched. The 8.8 seems like a waste of money to me.
You are hard on the equipment. I like it.

What size tire are you running and what are you doing with it to bust stuff with a stock 4.0?
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Old January 2nd, 2013, 08:02 PM   #13
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39.5s iroks. The first set broke at bundy hill crawling a wash out. I do some rock crawling, and trail riding. I also drive it two weeks a year on the street. It has a 5.3 Chevy in it now.
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Old January 2nd, 2013, 09:48 PM   #14
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i wanted to do a 5.3 swap but i was only 17 and i didnt think i could handle set up the fuel injection
how do like the it
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Old January 3rd, 2013, 06:03 AM   #15
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i wanted to do a 5.3 swap but i was only 17 and i didnt think i could handle set up the fuel injection
how do like the it
It's great. I love the power of it. The set up was easy. You can order a new wiring harness for $600 that you only have 3 wires to hook ,Have the computer re-tuned,and then I'm running the stock fuel pump with a Corvette fuel filter.
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Old January 3rd, 2013, 06:25 AM   #16
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Stock 40 psi YJ pump?
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Old January 3rd, 2013, 08:19 AM   #17
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It's still a c-clip axle, I would go with something full float.
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Old January 3rd, 2013, 12:04 PM   #18
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Quote:
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My close friend has ran his 8.8 on 35" boggers for the past 3 years with a lunchbox in a yj with a 5.3l and its never skipped a beat. 8.8 IMO
with 335ft-lbs of torque dont forget the several clutch dumps flooring it over logs and rocks at twisted trails and bundy. also you can always upgrage to a super 88 kit which is said to hold 39's i killed several 760x and 1310 u joints and never once had a problem with the stock 8.8 welded/lunchboxed. 8.8 are common and go for around $100-$150 and you keep your stock lug pattern, width and get disc brakes from 96+. i wouldnt run a 14 bolt for anything under 38.5's being that you lose so much ground clearance and a 9" because the width, no disc brakes and different lug pattern. 8.8 is the best option for a yj running 37's and down imo.
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Old January 3rd, 2013, 12:12 PM   #19
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Stock 40 psi YJ pump?
It's a stock 1995 4.0L H.O fuel pump. The guy at Howell performance said it would be fine. But if it was a 2.5 it wouldn't work. They said I needed to run the 02 Corvette fuel filter so I would have a return line and it regulates the fuel pressure. So that's what I did. And it runs great.

Last edited by little_yj_95; January 3rd, 2013 at 12:23 PM.
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Old January 6th, 2013, 05:56 PM   #20
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does anyone know if they make a 40 spline detroit locker for a ford 9", i know they make a spool
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