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Thread: What rear ends will fit under a CJ7? Reply to Thread
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  Topic Review (Newest First)
05-27-2020 06:56 AM
304aaron Someone had asked where I'm at, I'm in WV. The guy got back to me about the Ford 9" and to be fair he was quoting me a full rear end ready to go, but he wanted $3,000 to cut it down and build it. In the mean time, I think I may have found a CJ with a centered amc 20 and dana 30 front, 4spd manual with I assume a Dana 300 tc and the guy wants $600 for the entire Jeep. I'm going to look at it tommorow. I'm kinda hoping it's a wide trac as well.
I should have added, I'm really building this to have fun driving a round in a nice old jeep. I want to do it right, but it will probably never even see a mud puddle!!
05-26-2020 07:33 PM
mainejeeper1919 International scouts came with Dana 44 that are close to the same width as cjs. The tubes are a little thin but with some reinforcement they work just fine.
05-26-2020 05:57 PM
Chewtoy I'll just throw this out there, but there was a time I used spacers to turn my NT axles into WT axles and the stability/drive-ability change was amazing. Of course I had to take the next step to a set of 60" (ish) axles and I 'll never look back. The point is, you might want to look at converting over to a set of centered WT axles that someone is getting rid of because they are going to full width or other, with a standard Dana 20 transfer case that bolts to everything in those years. I was surprised at how much better it drove.
05-23-2020 09:55 PM
CSP First of all, post your location! Someone reading this may have a centered, NT AMC20 of D44 that they could sell to you.

BJ's Jeep Parts has new, USA sourced Quadratrac chains, if that's why you're wanting to swap transfer cases.
05-23-2020 05:11 AM
skizriz You can really do whatever you want with it. If you are adapting a transfer case, you could adapt a center output 300, as easy as you could adapt a offset output 18.
If you decide to narrow a stronger axle to fit, you could center it, or offest it to match.

I run the offset Dana 18, with a 6" narrowed offset 14bolt axle to match.
The reason I narrowed it 6" is that the stock axle shafts are 6" shorter on one side. Now I just run two short side shafts that
I can pick up for $25 all day at the pick and pull if ever needed.
05-22-2020 10:02 PM
wrangler0415 If you can, you can find 44's out there. My 73 has a D44
05-22-2020 09:54 PM
80cj What do you plan to do with your Jeep? If only street and moderate off road, I think it makes mire sense to find somethng that will bolt in or require little fabrication.. There's nothing wrong with narrow track AMC 20 or 72-75 CJ D44. With the AMC 20, you have a better chance of finding an axle with compatible gear ratios.
05-22-2020 06:08 AM
DV915 Itís really not that expensive to find a Ford 9 inch at the junkyard and have the housing and axles narrowed to your specification. Any local machine shop can narrow the housing and the axles can be shipped to a shop that specializes in cutting and re-splining the axles. The new gears and gear setup would be the most costly aspect of the project but you could likely have everything done for around $500.
This is the route that I took.
05-22-2020 05:12 AM
jeepdaddy2000
Quote:
Originally Posted by 304aaron View Post
I guess I really "could" use it, but as I put this Jeep back together I'm committed to putting things in the way I really want it and only doing it once even if it takes me longer to get it back together. So the quadra trac is not what I really wanted. However I didn't know about the Dana 18 transfer case option. I think I would be ok with that.

While not for everyone, the QT is a good case. The biggest issue is sourcing quality chains. They can be converted to part time with with a Mile Marker kit. If you do replace it, be sure to advertise it here, as there a number of members who would probably be tickled to have a spare on hand.



As for the D18, a starting point.

https://www.novak-adapt.com/catalog/...transfer-case/
05-22-2020 04:47 AM
304aaron
Quote:
Originally Posted by BagusJeep View Post

Have you looked at the arrangement and satisfied yourself that you CANNOT use the existing axle? It is a question of clearance and angles that the joints run through.
I guess I really "could" use it, but as I put this Jeep back together I'm committed to putting things in the way I really want it and only doing it once even if it takes me longer to get it back together. So the quadra trac is not what I really wanted. However I didn't know about the Dana 18 transfer case option. I think I would be ok with that.
05-22-2020 03:56 AM
BagusJeep I have a centre output D300 out to a off centre Toyota Landcruiser FJ series axle in Puthijeep (about the same as a Danaa 44). The angles are doable, as this particular CJ is not lifted, and it has been running like this for over 10 years.

The front joint was run dry by the PO and had square trunnions and dust for needle bearings when I got it. However the greased replacements have lasted 9 years.

Have you looked at the arrangement and satisfied yourself that you CANNOT use the existing axle? It is a question of clearance and angles that the joints run through.
05-21-2020 12:26 PM
Supraquick
Quote:
Originally Posted by 304aaron View Post
I
spoke to a local drive line shop today about cutting down a Ford 9". I'm a little scared to see what price he comes back with!
I would probably look at early toyota pick up truck 8" axle if I was going to all of the cost and trouble of a narrowing a 9" ford. Stock electric locker with 4.10 drop outs can be reasonably had. 6 lug pattern could be a plus depending on what front axle you want to find.
05-21-2020 11:50 AM
jeepdaddy2000 Another option is to keep the offset axle and adapt in a D18 t case.
05-21-2020 11:30 AM
RiverandSand
Quote:
Originally Posted by 304aaron View Post
I'm looking for a rear end to replace the off set AMC 20 that was factory in my Jeep.
You must be replacing a QuadraTrac system. Any Amc 20 non QT from 76-81 NT are centered, will fit. A D44 from a Commando will fit also. As others have said D44 WT will fit also. You could also go custom from Currie or the like.
05-21-2020 11:20 AM
304aaron I
spoke to a local drive line shop today about cutting down a Ford 9". I'm a little scared to see what price he comes back with!
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