I am in the market for a posi. I want to transform my open 12 bolt to one, but would like to get the best unit for the dollar. Any help would be appeciated and why>>>>>>>>

Talk to Tom's Diff.'s in Paramount, CA (south east L.A. basically). They should be able to answer any of your questions regarding a good posi for the 12 bolt. They sold me a Eaton posi which was worked over a bit for around $520. I believe that amount of cash was well spent for the unit I got.

Joseph

Auburn makes a Pro series cone-type posi carrier for the 12-bolt that is a nice unit. It will set you back about $425-450 http://www.camaros.net/forum/wink.gif.

Thats what I went with when I converted my 3.07 open to posi....

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Steve McCorry
'69 Camaro RS/SS-350 - Daytona Yellow
'95 Camaro Z-28 - Sebring Silver

I was told that the Eaton units are the only ones that can be rebuilt if that affects your decision any.

I believe all clutch type diffs are rebuildable. I have a Moroso Brute Strength thats seems pretty heavy duty. Around 475 I believe

I believe cone type can be rebuilt also...

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Steve McCorry
'69 Camaro RS/SS-350 - Daytona Yellow
'95 Camaro Z-28 - Sebring Silver

The Auburn cone style posi unit is not rebuildable. The Eaton, or Moroso Brute Strength (built by Eaton) are rebuildable. If you are looking at long term investment for a car that will be driven, not babied, go for the Eaton unit. If you are looking at something short term (ie: something you may sell soon) go for the Auburn unit. The Auburn is quite a bit less expensive than the Eaton unit, but the Eaton unit is far superior in quality. I would contact either Reider Racing, @ 1-800-522-2707, or Randy's Ring & Pinion @ 1-800-292-1031.

Good luck

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70 & 1/2 RS
SB406 & M20 4spd
9" rear

70 Malibu 350/TH400

Gold member #103
Driveline Technician

I know there was a lengthy discussion about posi units on Team Chevelle. I currently use Eaton unit and no problems. Also rebuildable is a great factor over non-rebuildable for long term or short because you can sell it as a rebuildable posi unit included. http://www.chevelles.com/forum/Forum4/HTML/000963.html http://www.chevelles.com/forum/Forum4/HTML/000985.html


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1970 chevelle ss
want 69 z28 BADLY

I bought my complete 12 bolt unit from Currie enterprises. It actually uses Ford tubes and axles from a 9 inch but uses the 12 bolt housing.( best of both worlds) Mine is rated up to 500 to 600 hp I believe and cost about 2k with shipping and all. If that doesnt float your boat just give them a call, they have been great to me and others I know and may be able to help you with jsut a posi unit. I personally dont mess around with parts like rear ends...I go only for the best...at least I try! Whoever you buy from...I usually ask for references and make a couple of calls. http://www.camaros.net/forum/biggrin.gif