I have a 98 ss with the m6. It came with the auburn posi from slp. I am going to be replacing the gears soon because they are going bad. Is the auburn posi any good or should I get something else. How can I tell if it is bad? Do I need to rebuild it. Let me know what is the strongest..

 

A buddy of mine has an Auburn posi and gears in his chevy scotsdale truck. He has been satisfied with them and after 3 years of abuse there still holding up strong.

 

I broke a set.. Replaced with Strange.. On my LT1..

 

I was running the Auburn Pro last year and loved it, no problems what so ever. I actually have it for sale too $300 (3000Miles on it).Went to a 9" Currie 35 spline Detroit Locker for this year.

 

Buy a Torsen T2R if you want to put power on the ground while turning. May be better drag clutch types, but not if you do something other than going straight.

 

The stock auburn units are pretty weak and will not stand up to a lot of abuse. Auburn offers a better replacement unit that has around twice the clamping hold of the factory unit. The really bad thing about the auburn is when it fails you throw it away. If you replace it get an Eaton. They have clutches and can be rebuilt.

Steve

 

Jack the car up so that both wheels are off of the ground with the car in gear and the E barke off. Sit down on the ground facing the wheel (either one) and grab the tire at 3 and 9 o'clock. Try to turn the wheel if it doesn't turn or turns very hard the posi clutches are OK. If it turns easily then the posi is shot and it can not be rebuilt. Follow the above recomendations for replacing it with a unit that's right for your usage. I chose the EAton HD for drag racing and rebuildability <-- is that actually a word?

 

Well Steve, when was the last time you ever checked out Auburns Website ?? I was there about 4 days ago, and apparently, you can buy service kits now, Spring Retainer Kit, Pinion Gear Kit and Pinion Shaft Kit... I have not torn an Auburn apart but when I looked at one, looks a lot easier to rebuild with the 3 above kits versus rebuilding an Eaton Differential...

http://www.auburngear.com/aftermarke...lt.asp?page=sk Check this page out to see what I am talking about..

 

Thanks for the info but when was the last time you READ that web site ?? While its true that some items in the auburn posi are servicable, the vast majority of the failures in the oem units are related to burning up the cone clutch. This part is not rebuildable nor is it servicable. See ...

http://www.auburngear.com/aftermarket/drex/

Steve

 

Steve, Thanks for the information, as I did not read about Drex, my bad, but oh well, I should have paid more attention to that...

That is good information to know, since I still might go with the Auburn but with this information, how long do they usually hold up before the cone wears out (Pro Gear) ???

Thanks again,

Charlie

 

Well I am not an expert on rears nor anything else automotive but have talked to one because the auburn unit in my 91 Z is shot. He recommended the eaton unit and told me that he does a LOT of 4th gen f-body cars because there is too much power for the stock auburn units. He gave me the list of units I could use and informed me that the replacement Auburn units are not nearly as weak as the OEM units. In fact he had over 150 auburn units in stock (and it was the cheapest option he offered.)

Units like the Torsen work well for autocross, clutch type units are great for straight line acceleration. When you come right down to it the auburn units are clutch based posi units without the ability to rebuild the clutch.

All I can say is do the research and select what works best for your application.

Steve

 

Thanks for the information Steve.. I am probably going to go with the Auburn Pro Series, since it will serve it's purpose for Street Use (for my 68 C10's 12 Bolt).. Now, how long does the stock Torsen Last is my next question ??

 

If you want to drag race (or street race) and will hammer the rear, a torsen unit may not be the best thing to have. When they break its typically the spider gears. When (or should I say if) this happens you will have debris in the rear which can cause other damage. Most times they grenade at initial shock so your not moving too fast. If you choice the Torsen and drag race it you take your chances. For your 68 C10 I would go with a clutch type unit. The Auburn Pro is not a bad unit its just not rebuildable. If you sell and buy vehicles often and do not plan on having something in a few years (or months) the auburn is a perfect choice. But, if your planning to have a vehicle for a long time, I would select another clutch style unit.

Steve