Mopar Limited Slip Differential

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CTD

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I plan on purchasing one from Moe's in the next week or two before winter hits for some added traction. I think it is non since for a 4x4 truck not to have come standard with limited slip this day and age but I knew this when I bought the truck. I am pretty proficient and comfortable mechanically but have never really done any gear work.

For guys who have installed one of these. What all is involved in installing one, does it require any specialty tools, or is this some thing I should just leave alone and take it to a professional mechanic?
 

69GWC

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I am with you on that, 4x4 should have a lsd in it standard.!

following as this is on my list of to do as well.
 
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indept

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This is not something you want to tackle if you've never done any gear / rear work. If you really want to try it, youtube it.
 
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S0CAL

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I have 4WD and bought my gears and gear kits from Moes, (went from 3:55 to 4:56 front/rear) and added Detroit TruTrac LSD, and threw in a Mag-Hytec rear diff cover. Out of all the mods I have done, besides a tuner, the regearing and LSD have made the most significant performance improvement. If you are going to tear into the differential and pull the open diff, why not consider regearing and swap out the ring and pinion too, as you have to pull those anyway to put in the LSD. It's more $, but man oh man what a change you will see.

Setting the backlash just right is an artform. I paid a jeep specialist $500/axle and I supplied the parts and gear oil (Redline of course!) and I have no gear whine, no leaks, and no chatter. I youtubed this for months and decided this was a job for a pro, and not this shadetree mechanic.

Good luck on your regearing.
 
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Jeepwalker

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Setting the backlash just right is an artform.

If you haven't done it before definitely find someone who's done several, and more importantly is a detail-oriented worker who has the time and committed to get it right (not rush the job). Sometimes the job can involve more time shimming and more removal and re-shimming. That's why you want a guy who isn't going to say, "oh, that's close enough" when he's really thinking: 'jesus, my kids ball game starts in an hour and I've got to get cleaned up and get over there!'

Beyond that, it really isn't THAT difficult for a person with a high degree of mechanical skill, patience and the modest tools needed. There are some really good youtube videos which explain step by step how to do it and what 'incorrect' looks like ...and common mistakes. You might consider calling a couple shops which do large truck driveshaft and u-joint work. They usually do a lot of diffs. Often they can install a gearset really quick for a nice price that'll make you say, "Yeah, let's get it done!".
 
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CTD

CTD

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I have 4WD and bought my gears and gear kits from Moes, (went from 3:55 to 4:56 front/rear) and added Detroit TruTrac LSD, and threw in a Mag-Hytec rear diff cover. Out of all the mods I have done, besides a tuner, the regearing and LSD have made the most significant performance improvement. If you are going to tear into the differential and pull the open diff, why not consider regearing and swap out the ring and pinion too, as you have to pull those anyway to put in the LSD. It's more $, but man oh man what a change you will see.

Setting the backlash just right is an artform. I paid a jeep specialist $500/axle and I supplied the parts and gear oil (Redline of course!) and I have no gear whine, no leaks, and no chatter. I youtubed this for months and decided this was a job for a pro, and not this shadetree mechanic.

Good luck on your regearing.

If you haven't done it before definitely find someone who's done several, and more importantly is a detail-oriented worker who has the time and committed to get it right (not rush the job). Sometimes the job can involve more time shimming and more removal and re-shimming. That's why you want a guy who isn't going to say, "oh, that's close enough" when he's really thinking: 'jesus, my kids ball game starts in an hour and I've got to get cleaned up and get over there!'

Beyond that, it really isn't THAT difficult for a person with a high degree of mechanical skill, patience and the modest tools needed. There are some really good youtube videos which explain step by step how to do it and what 'incorrect' looks like ...and common mistakes. You might consider calling a couple shops which do large truck driveshaft and u-joint work. They usually do a lot of diffs. Often they can install a gearset really quick for a nice price that'll make you say, "Yeah, let's get it done!".

I appreciate the info. That was pretty much all I needed to hear. I will not be attempting this one has much has I love to wrench on my own trucks. I'm pretty sure I can get this done for a reasonable price. There are gear heads on pretty much every corner in this neck of the woods. Thanks for the feedback fellows.
 
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kad

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Question about re gearing and swapping to a LSD. Is it purely mechanical or does anything have to be changed/updated in the computer?

-K
 

JPT

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Question about re gearing and swapping to a LSD. Is it purely mechanical or does anything have to be changed/updated in the computer?

-K

I would assume one would have to have the speedo adjusted at the dealer.
 

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Question about re gearing and swapping to a LSD. Is it purely mechanical or does anything have to be changed/updated in the computer?

-K

I don't know. I have a Trinity 1000 tuner with Hemifever custom 93. He adjusted the shiftpoints in the tune. I changed nothing else, and did not need dealer to adjust computer. If one doesn't have a tuner, I imagine a trip to the dealer would be prudent though.
 

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I would assume one would have to have the speedo adjusted at the dealer.

No, the speed is read through tire rotation. If you change the diameter of your tires, you need to adjust the speedo, either with a tune, or a trip to the dealer.
 
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