Lincoln LS Limited Slip Differential bolt-in...

Nice!
The only issue would be re-installing it then, since the new case is different all the shims need to be changed as well right?
 
That's an Eaton E-Locker... I have one in my truck, great unit... but WAY WAY overkill for the LS... Plus, it's not a limited slip, it's only a locker or open diff; you choose between those two. If you want locker and limited slip, Auburn Elcted would fill that bill... but again, serious overkill.

What you need is an 8.8 trac loc (28 spline) from a mustang basically. Search "8.8 trac loc" on ebay... should find a couple, don't pay over $70 for it... get a rebuild kit for it (would be stupid to install used without a rebuild)... should be able to find one on ebay as well (I'd keep looking till you find one under $80).

You're in Detroit, so head up to warren with your carrier (or car), and your parts... stop in at DTS (drive train specialists)... they'll install everything for you, or if you want to just go all new, they'll do that too. DTS is a nationally known company that specializes in performance rear-ends... you can't go wrong. I have them do all of my work.



ADDED ON: You can usually get a brand new 28 spline Trac Loc for a ballpark price of $250 if you shop around. So it's your choice which way you want to go, rebuilt used isn't that much less than brand new. But if you take it to a place like DTS, they'll add or remove plates and change spring pressure to adjust the preload and torque capacity... or in other words... how much slip it allows. But we're talking an LS with at best 310 crank HP when running tune and CAI... doubtful you need any adjustment from a factory set-up
 
97stscaddy said:
Nice!
The only issue would be re-installing it then, since the new case is different all the shims need to be changed as well right?
Click to expand...



Nope. The case is the EXACT same size where the shims have to go in both diameter and width. I measured them both to the nearest 1/1000th inch on my mill. You can reuse those from your 8.0" differential if they look to be in good condition.
 
97stscaddy said:
So there won't be any change in the backlash on the ring gear as long as the same shims are used?
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It is always cheap insurance to check the diff you will be putting in against the diff coming out of your car. If they measure up the same (as they should) then you can reuse your stocker shims and just slide the 8.8" LSD back in with them.
 
This is funny, but I never tought much about it, I had the Diff bearings changed under warranty at about 48K, the mechanic who did the work at the dealer said it looked just like Dana diff, he's worked on. Are these Dana Diffs in our cars?
 
ILLS said:
Nope. The case is the EXACT same size where the shims have to go in both diameter and width. I measured them both to the nearest 1/1000th inch on my mill. You can reuse those from your 8.0" differential if they look to be in good condition.
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I agree, I just responded yes to the post because I dont believe in reusing old parts :D
 
I also have a 8.8" POSI unit for sale for $100 if anyone is interested. not the entire diff, just the posi unit to go inside of the stock casing.
 
ILLS said:
Well I decided to finally get off my tail and do some measuring today to see what ways a LSD could be installed into the stock Lincoln LS differential carrier. There were two other viable options that Jason and I had thrown around.

1) Do a powertrax unit into the stock 8.0" diff case.

2) See if an 8.8" 28 spline differential would bolt into the LS 8.0" carrier while using the stock LS gears.


I know I had mentioned I planned to get to this and I finally did today. Tore the 8.8" down first. Took my measurements. Then it was time for the 8.0" LS diff teardown. Did that and took a few more detailed measurements. So far everything was a perfect match. Then I decided I had better unbolt the 8.0" ring gear and see how it measured up to the 8.8" ring gear bolt pattern. Same, 10 bolt pattern same OC measurement. I finished bolting the 8.0" LS ring gear onto the 8.8" differential and then bolted it all back into the LS carrier. Long story short... It was a dead match in every way.

I decided not to even measure for the Powertrax option as it will be the more expensive option of these two; though slightly more easy to install.

Now as some of you may know, we had already did the 8.8" full differential assembly swap in Jason's LS with a 8.8" LSD w/ 4.10 gears and a custom diff brace built by me. I wanted to discover if there was something a little more bolt in for those of you that just wanted an LSD but still stay with the 3.31 or 3.58 LS rear gears. This is it. So far I have only tested this on the Gen1 LS differential but have no reason to believe that it will not work with a Gen2 LS differential also. Once I do the differential swap in the springtime I will let you all know the official Gen2 results.

This will be a good mod for those of you planning to either to my turbo system, a roots supercharger like Quik or a nitrous system. No more one wheel wonders. :cool:
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LOL. Told you they looked the same.:p Obviously without measuring accurately nothing is for sure.


Shame the 8.0 gears don't seem to come any larger than 3.58.


Guess I'll be the only 4.10 LS.
 
EH... I'm sure if someone really wanted, they could have 4.10's made for the 8"... or you could possibly have 8.8 gears modified... not sure which would be more expensive.
 
NateRW21 said:
EH... I'm sure if someone really wanted, they could have 4.10's made for the 8"... or you could possibly have 8.8 gears modified... not sure which would be more expensive.
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Im working on that now ;)

I have a manufacturer looking into the differences.
 
FYI I already had DTS working on this so they should be familiar with it and said they had some LS units in stock, never was able to find out if they where Gen1 or 2. Problem was Modifying the pinion to fit as I wanted the 4.10s requiring 8.8 R&P. Not that it couldn't be done just I went my way as I found it easier. If you go to the 8.8 R&P you will have to modify the driveshaft, its the pinion shaft end that controls the style of flange for the driveshaft connection.
 
02V8Sport said:
Im working on that now ;)

I have a manufacturer looking into the differences.
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R&P are matched and they where different enough that a quick glance was enough to see it.

They could thin the pinion to cram it in the LS 8.0 case...but probably not the best way to go if it would even work, thats what they said at least.
 
The pinion style of the LS is used in foriegn applications often. The chances of it being the same pattern or capatible in any way with the LS unit is slim but maybe theres a ger option there.
 
That's funny, I'd contacted them this summer about putting in an LSD and they said they had a unit there tore apart and hadn't been able to get the old school 8" to fit. Must have been you they were working with!
 
NateRW21 said:
That's funny, I'd contacted them this summer about putting in an LSD and they said they had a unit there tore apart and hadn't been able to get the old school 8" to fit. Must have been you they were working with!
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Yep probably me. It was always about gearing up with a LSD, never just LSD. He mentioned, believe it was Rob there, if I just wanted a LSD it looked like that would work...I wanted gearing. Old school 8" uses a different pinion shaft size and the gears mate differently like a 9", different than 7.5s and 8.8s. Never really talked long about that. He wanted to put a 7.5 LSD with gears in it with custom bushings, I wasn't digging that and pushed for fitting the 8.8 in as it lokked promising from what I had seen. When he got to the pinion of the 8.8 issue, he said he work on it and let me know, well that was awile ago and I've obviously moved on. They weren't really working on it much for me, kinda kept putting it off as it wasn't the norm and I wasn't exactly paying for it....yet.
 
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