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Limited slip differential?

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  #1  
Old 02-26-2012, 08:04 PM
ColinSLC56
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Default Limited slip differential?

Hey guys. Lately I've been wondering about this. Does anybody know if my truck would have a limited slip differential? Or if not, how to find one, online or in a junk yard? I'd really appreciate the help, I just lifted my truck, getting ready for some bigger tires, and I'd rather not skimp on this. Here are the details of my truck, please ask if you need extra info:

1993, 4wd, 3.55 axle ratio, 4spd automatic w/OD.

Here is a link to my truck and it's technical specs on the dealer's website (They never deleted the page haha): http://www.905carsandtrucks.com/web/vehicle/1632209


Thank you so much!
 

Last edited by ColinSLC56; 02-26-2012 at 08:07 PM.
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  #2  
Old 02-26-2012, 11:42 PM
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Best way to know is lift both rear tires in the air. Place the transmission in neutral. Spin one and notice what direction the other spins. If it spins in the Opposite direction it is an Open differential which is normal/common. If it spins in the same direction then it is a LSD.

You can buy a unit from www.ringpinion.com or www.summitracing.com
 
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Old 02-27-2012, 07:22 AM
ColinSLC56
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Alright I thought there might have been an easier way but I'll try that and get back.
 
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Old 02-27-2012, 05:55 PM
ColinSLC56
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I have an open differential... SIGH... I'll look around at junk yards and give some calls. It'll probably end up being off a newer Dakota or Durango. Now, do I have a 7.25 rear end with my 318? On the Diff Wizard page, the cover is the same as mine, but I thought I read they did not put a 7.25 behind the 318's...
 
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Old 02-28-2012, 01:42 AM
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That would be odd if it is a 7.25. Possibly someone swapped it in. Octagon shape is the 7.25 Oval shape is 8.25. You can always email Dodge and get a build sheet with all the details for free. The link is in the FAQ.
 
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Old 02-29-2012, 06:54 AM
buick
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Does anyone know just how rare the LSD is on our trucks?

I'd imagine they're most common on 2wd v8 models, as people liked the posi rears for drag racing. Did people know how useful they are for 4x4ing 20 years ago?
 
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Old 02-29-2012, 12:34 PM
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It is not to rare, it is possible to find one in the junkyard. But to find a good unit that is worn is rare. There are rebuild kits.

They do help vs an Open diff but not perfect. The most they will give is 80/20 traction and can be even less and not constant vs an open can be 100/0, these are under extreme conditions.

If traction is what your looking for a Locker is what you want true 50/50 no matter what.
I got the Powertrax No-Slip locker and I love it.
 
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