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View Full Version : 10blt. 8.2" posi question


Keith
01-11-2005, 07:15 PM
A friend of mine has a 10blt. 8.2" in his 70 mailbu and he was thinking about adding posi to it. From what I can tell from driving it, it either has 2.56's or 2.73's. Here's where it gets interesting.....according to Eaton & Auburn, they do not make posi units for the 8.2" in a carrier numerically lower than 3.08s. So, I'm open to suggestions or referrals. I doubt he wants to swap his ring & pinion and I know he doesn't want a spool since he mostly cruises the car.

What should I do :lateral: ?

zbugger
01-11-2005, 08:39 PM
Have you checked out the Trac-Loc? Maybe they have one for it.

MaxHarvard
01-12-2005, 07:49 AM
A friend of mine has a 10blt. 8.2" in his 70 mailbu and he was thinking about adding posi to it. From what I can tell from driving it, it either has 2.56's or 2.73's. Here's where it gets interesting.....according to Eaton & Auburn, they do not make posi units for the 8.2" in a carrier numerically lower than 3.08s. So, I'm open to suggestions or referrals. I doubt he wants to swap his ring & pinion and I know he doesn't want a spool since he mostly cruises the car.

What should I do :lateral: ?

I have the 8.2 in my car... i got the eaton posi with it and 3.73's

If you dont want to sacrifice cruising ability, just get a set of 3.23's or even 3.08's.

Keith
01-12-2005, 04:25 PM
I have the 8.2 in my car... i got the eaton posi with it and 3.73's

If you dont want to sacrifice cruising ability, just get a set of 3.23's or even 3.08's.


I know...I just wanted to assist my friend in being cheap as I think the switch from 2.73's to 3.08's is only 300 rpms...roughly...depends. I told him to start looking for a factory posi unit since I'm sure a few came with them.....

Vince@Meanstreets
01-13-2005, 02:29 AM
you wont even notice the difference from 2.73's to 3.08's. Well except in acceleration of coarse. I may still have a used 3.08 gear set if he's interested.

Keith
01-13-2005, 01:48 PM
you wont even notice the difference from 2.73's to 3.08's. Well except in acceleration of coarse. I may still have a used 3.08 gear set if he's interested.

I'll ask him...what do you want for them? Are you sure they're for a 8.2" non-BOP? Thanks!

ILLEGAL69
01-15-2005, 02:29 PM
Hello to everyone. This is my first post.

On the topic of 8.2 BOP posi units.

Which unit is a better, the Auburn or the Eaton.

I am rebuilding my rear end and am going with 3.90 Richmonds, but I am not sure on which posi to buy?

Vince@Meanstreets
01-15-2005, 08:34 PM
I've ran both and I must say the Eaton was better. The Auburn is a cone posi and it will wear out and is not rebuildable. The Eaton uses clutches and is rebuildable.
I had an Auburn let go on a customers, we found that it wasnt serviced offen and it lead to its failure. Metal from cone wear circulated through the bearings and well its all no good now. They have some nice lockers out there too...air and centrifical type.

Keith
01-15-2005, 11:26 PM
I've ran both and I must say the Eaton was better. The Auburn is a cone posi and it will wear out and is not rebuildable. The Eaton uses clutches and is rebuildable.
I had an Auburn let go on a customers, we found that it wasnt serviced offen and it lead to its failure. Metal from cone wear circulated through the bearings and well its all no good now. They have some nice lockers out there too...air and centrifical type.

So how about those 3.08's? Still want to unload them? :)

Vince@Meanstreets
01-16-2005, 01:03 AM
oh yeah sorry keith, let me go find them tomorrow...haven't been to the warehouse in a week. Let you know tomorrow night. Vince 8.2 GM yes

Keith
01-16-2005, 02:52 PM
oh yeah sorry keith, let me go find them tomorrow...haven't been to the warehouse in a week. Let you know tomorrow night. Vince 8.2 GM yes

Thanks!!! Just let me know when you get a chance. Pretty good chance we'll buy them if you still have them and they're in good shape. :cool:

Vince@Meanstreets
01-17-2005, 01:54 AM
Hi Keith, sorry all I could find were 2.73's...I had 2 sets of 3.08's but now I don't. Its funny how crap dissappears when you move....Sorry, but i'll keep my eye out for them. Vince

Keith
01-17-2005, 01:43 PM
Hi Keith, sorry all I could find were 2.73's...I had 2 sets of 3.08's but now I don't. Its funny how crap dissappears when you move....Sorry, but i'll keep my eye out for them. Vince

I'll let him know. Thanks for taking the time to look! :cool:

Carnutz
03-13-2005, 02:19 PM
I can get new 3.08's and the Eaton if your interested.....

Keith
03-13-2005, 02:36 PM
I can get new 3.08's and the Eaton if your interested.....

We changed from the 3.08's to a 3.23 or 3.36 because of the custom grind roller cam I bought from Comp. So I'll need a 3 series Eaton and one of those gear ratios. What kind of pricing can you get? Pm me if you'd like or email
keith at zefhix dot com

Thank so much for the offer!