Opps I ment Auburn Pro Series.

 

I put a PowerTraxx in mine & really like it. 00 GMC ECSB W/ 5.3 2wd. What I like about it is that there is no need to re set the backlash and all of that crap. It replaces the spider gears. Took about an hour & it was pretty simple. It locks up perfectly every time and ther are no clutches. I have had it in one year and no problems. I don't know what kind of HP you are running but it works good in my application.
Just another option.

LK

 

what is powertraxx? would like something that will at least put up with 350-400 at the wheels. dont have that yet but plannin ahead.

 

I broke a few of those too

 

have you bought one yet?

i love my Eaton. it is my 1st experience with a posi unit. i put it in a year ago, actually i finished xmas day. it has been working great since. works good in snow and dirt roads, but if you get it too much gas your *** end swings.

i've put it through alot of abuse over the last 12 months and it still runs smooth. it is super quiet. don't even know it is back there.

 

I broke an auburn pro series. I will NEVER buy another auburn product. I replaced it with an eaton and haven't had a problem since. (correction: I did break some teeth off of the ring gear this summer, but that's because I was towing my dad's prostreet 66 impala and the richmond race gears didn't appreciate that at all). If I should happen to have a problem with the eaton, I will be replacing it with a detroit locker. But so far so good. Did I mention I launch at 4 grand on slicks?

 

i havent bought one yet, i just want one that is not so hard to lock up and not very easy to break. i dont know if there was something wrong with my truck when i got it but it would never break just one tire loose and now i cant take off anytime without one tire fire. i think i might have messed it up the one and only time i went to the track. that was the first time i ever had it spin one tire like mad. been like that ever since.

 

anyone with any experience with detroit lockers?

 

I don't think I've ever heard of anyone breaking an Eaton Posi. I think someone had some clutches go out once, but they were replaced and back on the road with minimal cost/downtime.

 

I just wanted to included something about the eaton springs/clutches vs. the Aurburn cone clutches.

On the Eatons, you can add more clutches and increase the preload by changing the springs. The Auburn you cannot. At first this appears that the Eaton is the superior design. But think about this: When you change the springs in an Eaton, you increase the amount of pre-load, thus making it a more aggressive unit. However, that amount of pre-load is always on the clutches (even around corners or backing out of a parking spot,etc.), increasing the chance for wear.

An Auburn uses its spring/cone clutch design that increases the force on the clutches in accordance with your right foot. This gives you a very mild, well behaved unit around town, cruising and around corners. But when you mash it, it becomes more aggressive. It uses the centripetal force of the unit spining to allow this.

Also about the Auburn not being rebuildable: Again with the cone clutch design, as wear increases, the clutches move outward, allowing the same contact area and in turn the same force. This is how Ford 9in posi's work too, which is why they are a performance favorite. If an Eaton's clutches wear, that's it, they need to be replaced. Auburn offers a pro-rated replacement thing now too.

I chose the Auburn unit, because of these facts, and the fact that the shop that did the install has never had a worn out Auburn ever come in there! They did my dad's gear swap/auburn on his truck over 20 years and 200,000 miles ago.

If you're into carrier strength, check out the heat treated finish on the Auburn too, versus the as-cast/machine "clean-up" finish on an eaton.

Also don't go the powertrax route, I'll send you pics of a box full of broken ones.