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Old 12-14-2007, 11:15 AM   #1 (permalink)
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Dodge Dana 60 Vacuum Disconnect

I'm looking to buy a Diesel Dodge Ram. I did some searching on this site, and it looks like I am going to go after a 1997 12 Valve Ext Cab. If I find a early 1998 12 Valve Quad Cab it would be preferred, but I expect it would be mint$.

Anyway, I understand that these years all had the Vacuum disconnect Dana 60. As a short term fix, I would like to put in the cable posi-lok. However, is there a Dodge Dana 60 front from another year that would bolt in and not have this? I did a search and someone thought that around 2000-2002 there might have been a non-disconnect 60 before they switched to the other axle Mfg. Can anyone CONFIRM years etc. Please no guessing. I am looking for someone that has actual experience with this or owns a truck with the non-disconnect Dodge 60.
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Old 12-14-2007, 11:27 AM   #2 (permalink)
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Not a guess. *Most* 2002s have the non disconnect. You could also retrofit a '03+ AAM.

However EMS Offroad sells a one piece axle, seal and cover kit for under $300, would be much easier and cheaper, and should work as good.

What is the concern? I have never broken my CAD locked up with 42"s. I break the shafts at the yokes, thats it. (Mine is the later 32 spline axle though). For a DD, tow pig, you could just get the 4x4 posilok permalok kit for $100 and be golden.

If you want the big brakes, I suspect there is cheaper ways of doing that as well, however '00, '01 and '02 had the upgraded brakes and can be updated with the 03+ brakes for even more stopping.
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Last edited by ramv; 12-14-2007 at 11:28 AM.
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Old 12-14-2007, 11:31 AM   #3 (permalink)
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Quote:
Originally Posted by ramv View Post
What is the concern? I have never broken my CAD locked up with 42"s. I break the shafts at the yokes, thats it. (Mine is the later 32 spline axle though). For a DD, tow pig, you could just get the 4x4 posilok permalok kit for $100 and be golden.
x2.

I haven't had any issues even just leaving it vacuum actuated on my DD/tow rig trucks. I have always wondered why people spend so much money attempting to eliminate the CAD when it has yet to fail me on any of the '94+ Dodge pickups I've owned.

EDIT: Ramv's comment about the model years without the disconnect is accurate.

Last edited by mondtster; 12-14-2007 at 07:54 PM.
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Old 12-14-2007, 12:50 PM   #4 (permalink)
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I had broke the shift fork. I replaced it with the 4x4posilock fork. but i am still running the factory vacuum system. It is now needing blown with an air compresser about 2 time a weekend.
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Old 12-14-2007, 07:53 PM   #5 (permalink)
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Quote:
Originally Posted by bigbakdak View Post
I had broke the shift fork. I replaced it with the 4x4posilock fork. but i am still running the factory vacuum system. It is now needing blown with an air compresser about 2 time a weekend.
If you broke the shift fork I bet you also bent the vacuum actuator rod which is what is requiring you to use compressed air to move it.

I'm assuming you're wheeling this truck? If so, I would guess that that is possibly part of the cause for having the damage you have. As I mentioned before, I have not had an issue with any of my trucks CAD system but they also have only seen DD and towing chores as well as very light wheeling. The CAD system seems to be fine if it is used within the parameters for which it was originally designed, and its original intention wasn't to be a hardcore wheeler.
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Old 12-17-2007, 01:34 AM   #6 (permalink)
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Yeah the cad thing works great till you come down off 5-6 feet of air, then it becomes a nice week spot in the tube, your axle gets a smilly face and you get a frowny face. This is why I have an 82 axle in my 85. And yes i realize a 60 is inherently beefier than a 44, but a weakness is a weakness. Oh and I hate vacuum lines.
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Old 12-17-2007, 04:26 AM   #7 (permalink)
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I wouldn't consider getting 5 feet of air normal use for something that I suspect will be a tow rig.

These trucks were designed for primarily street driving with a little snow, dirt, mud, etc. mixed in. Nothing extreme. When used under the original intentions, the CAD works fine.

I do however agree that the CAD area of the axle tube is a weak spot if you were looking for an axle for a buggy or hardcore truck.

I would be willing to bet that the OP is looking for a Cummins Dodge to be a tow rig. All of the tow rigs that I have seen spend the majority of their time on pavement with the occasional excursion off road but nothing major. In this type of application the CAD system should be fine.

Last edited by mondtster; 12-17-2007 at 04:43 AM.
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Old 12-22-2007, 05:06 PM   #8 (permalink)
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OK, I bought a 1996 12v. I think I will see how the vacuum goes for a while. This will be mostly a tow rig, but it will see some action out in the desert as it will also serve as a chase truck for my race team. My first priority is getting a utility bed put on it.
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Old 12-27-2007, 02:04 AM   #9 (permalink)
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98 3/4ton on 44's, front axle works great dont change it
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