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anyone know if the 80's all came with limited slip or some with an open diff? if so, how do i tell what mine is without pulling the diff cover off? if they come with limited slip anyone know a good place to get a rebuild kit for it and also what about a limited slip for the front dana 60?
 

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did you grenade the rear? if not just jack up the rear and spin the tire, if the other tire goes the same way its limited slip. if it goes the other way you got a peg leg. also you should be able to give your VIN# to a dodge dealer and they should be able to tell you limited slip/peg leg.
 

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Look in the glove box. On the door in my glove box it list what rear end I have and it says posi trac. That would prob be the easiest!
 

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Don't consider limited slip in front axle. Not good for steering around corner with any power applied to go pedal. Think about it.
 

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If you have a CAD unit front axle, ONLY a selectable locker can be used unless you disable the CAD unit. You won't feel a posi in the front unless you are in 4x4. Some ratchet lockers will be virtually unnoticeable, too- like lockrights. Full case detroits will let you know they are there when the springs wind up and release the lock mechanism even in 2wd, though.

As to the rear, I'll note that pulling the cover is pretty easy, and you can SEE if you have preload springs from a posi. Spinning a tire can be misleading, if in neutral, it may spin the other side the same way, but without load on the posi, or the wrong oil, it might NOT even if it's a good working positraction. If in gear/park, it will spin the other backwards anyway. My favorite test is to jack up only one wheel, block the tires and put it in neutral and THEN spin it. This way you can FEEL the initial resistance from the clutchpacks. Once the clutchpacks break loose, they will offer much less resistance as the friction discs will get a film of oil on them until you stop spinning and let it rest. Then the preload springs will push the film off and snug it up again.

Ring And Pinion Gears, Axles and Axle Shafts, Drivetrain Parts and Tools - Accu Auto Parts has rebuild kits for the posi, but they are PRICEY. I would verify the condition of the axle before ordering the parts.
 

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Go with air lockers for the front, then you wont eat tires, and it will drive smoothly, I put a set of Detroits in the front of one of mine, and it drives like a tank!!
 

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Get ready to spend a cool grand on a clutchpack kit for a Dana 80. Sorry! :(

OOPS! I just checked. Depends on which posi you have. Powerlock (v shaped pins) is like $950 Trac-loc is more like $450 for the kit (round pin ends)

Still is some coin. I'd look at it before ordering parts, but maybe you are less frugal than me! :)
 
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