Plus with a locker on the street, you will be replacing rear tyres due to "scrubbing" more than you can imagine.
I have a Detroit TrueTrac and have also never spun just one wheel. Even in very muddy conditions. Just apply a little e-brake or footbrake and she locks right up.
Al.

 

I really don't need anything serious, I wasn't even considering an LSD until I saw this one at the right price. My truck is too long to do most of the trails near me and coupled with the IFS it's really not a good option if your hard core into wheeling. I miss my Jeep some times!

 

Oh, and the guy said for the 9.25" axle you need a special tool to take out the differential which he had and would include with the LSD. Is it true you need a special tool?

 

No one has asked so I guess I should. Jroy, is this just one set of gears? For a 4by you need matching front and back.

 

No gears, just the differential.

 

haha im not sure. the gears/lsd are the ONLY thing i havent dont myself on this truck. not comfortable enough installing gears.

have him throw in the tool. if you need it, you'll have it. if you dont need it, you'll still have it...for free. quit yappin about it and ****** that deal up. it wont be hard to get the surface rust off there

 

What we have here is a failure to communicate. I believe our definition of LSD is different. I like to categorize all clutch pack diffs as LSD's and all others as lockers. For instance, I call the truetrac a locker, since it doesn't have clutches and actually works, very well I might ad. All lockers in my experience, give a little in a turn and you'll hear a clicking sound when it does (I have a truetrac in my '80 GMC and it clicks). A true posi unit, like a spool, will chatter your teeth out and wear out rear tires. Long story short, I don't agree with clutch pack diffs, but I've never dealt with Auburn, just factory Fords and Dodges, so maybe they've got the secret? My '05 works when I do a burnout or if I'm tooling around in a little mud, but when I really get in a bind, only one tire spins.

As for the rust, it shouldn't be pitted if he's never used it. Whenever I've bought anything from a gear company, they always put a protective shipping grease on everything that will barely come off with acetone. But as long as it's surface rust, it should clean right up, just make sure the clutches look good.
Good luck and if you do get it, take a vid of it working when you do a burnout!!!

 

I know this has been asked before, but how do you determine if you have a stock limited slip differential or an open differential? My father (I bought my truck from him) thinks I have an LSD in it already but I don't think so as its consistently one wheel peel.

 

Go to a parking lot while it's raining or shortly after, turn sharp and gun it. If you end up looking right back where you came from (you did a doughnut), it's an LSD, if it only spins one tire, it's open. All the LSD's work well unless you do heavy off roading for a long period of time. I just have a pet peave about the clutch packs. Also, it may say on the inside of the glove box or if your dad has the original window sticker it'll say it on there too.

On a side note, I have the off road package on my '05 and when I lock mine in 4x4, the rear automatically locks. I've checked this by locking it in on pavement and then making a turn, it chirps the tires. I've never heard of an electronically engage LSD. Has anyone else experienced this or knows how it works? I know how the LSD works in 2 wheel pull, just curious how it locks up tight in 4?

 

For the record, I'd suggest you check out the difference between a locker and a limited slip! A TruTrac is a limited slip and is a solid unit. An Auburn is a limited slip and is a solid unit.
I will agree with you on one thing though, Ford and Dodge stock LSD are crap. GM seems to be the only ones to get it right in the Z71 packages.
There are advantages to a gear driven LSD and disadvantes, same as with a clutch pack LSD.
Yes clutch packs wear over time, but I've had Auburns in my 2nd Gen truck for 68,000 miles and it locked just as well the day I sold it as it did the day I put it in.
Clutch type LSDs react faster than gear driven ones and it's why the track guys ALL use Auburns, usually the Pro Series, which with a very high bias of about 3.5:1, is not very streetable.
A true locker is a wonderful thing, but NOT IN A DAILY DRIVER.

Even though I am constantly off the pavement and have an Auburn, which I am VERY pleased with, as a rule of thumb, logically I think you should choose a TruTrac for an off-road vehicle and an Auburn for a street/track vehicle...