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Unread 07-24-2012, 06:30 AM   #1
dylan0708
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1984 CJ7 
 
Join Date: Jun 2011
Location: deep river, CT
Posts: 188
8.8 swap into cj7

Ok so I'm attempting to do an 8.8 swap and I thought id throw some pictures up for future reference here. I had been looking for a new rear axle for almost a year and after reading how many people said the 8.8 was a bad swap for a cj due tithe incorrect offset I strayed away from it. However you can pick up an 8.8 with 4.10's and LSD for like $150 $200 bucks so I figured I'd give it my best shot. I picked up my 8.8 for $300, it came with 4.10's LSD new calipers and disks, new brake lines, and all the mounting hardware and 1310 yoke. I spent the last week measuring up and making the jigs to cut down the 8.8 to stock width. Now the only difference between the Amc 20 and 8.8 offset is the Amc 20 is offset towards the drivers side 2" and the 8.8 is offset to the passenger side a considerable amount more. So when all is said and done instead of having a stock 2" offset I'll have a new 1" offset.

My new axle shafts should be in from mosure with the 5 x 5.5 bolt patern this Wednesday, so then all together I'll have a new axle in my jeep in one week. The goal of this project was to get 4.10's into my jeep for as cheap as possible.

8.8 - $300
Mosure axles - $392
Disc redrilled to 5 x 5.5 - $25
Cutting and welding axle tubs - done at home $0
4.10 gears for front - $255 with master install
New d 30 carrier - $75
Grand total - $1047

Now that's not too bad for an entire regear and a new axle.

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Unread 07-24-2012, 06:33 AM   #2
82JeepCJ7
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Did you factor in the cost of converting the rear yolk to fit your drive line U-joints?
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Unread 07-24-2012, 06:35 AM   #3
dylan0708
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Yep, the 8.8 came with a 1310 yoke do it bolts right to mine.
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Unread 07-24-2012, 09:20 AM   #4
82JeepCJ7
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Ah ok. I know stock they have a flat flange on them.
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Unread 07-24-2012, 08:26 PM   #5
Havasu Living
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I've been banging around this idea as an axle for several years. Very interested in your jig. Whatever axle I do means cutting the length. Post pics.
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Unread 07-24-2012, 08:48 PM   #6
80cj
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Did you just butt weld the axles tube back together after cutting? My concern has always been the integrity of a butt welded tube. Other than that I think the 8.8 is a good choice. I've regeared a couple for friends and they're quite beefy. Some people still recommend welding the tubes to the housing, though.
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