[72pontiac]

Oh that was a reply to the guy with a Buick. I see now.

[72pontiac]

Originally Posted by Baron Von Zeppelin

That is as fair a deal as you can ask for, and I would do that.
As in I would physically have it apart and inspected.

Question still remains - how to verify it is a Series 2.
If can't verify until you have yours apart to compare, at least you would know at that time you had a verified good used Series 1 or Series 3 you could put up for resale.

Somewhere on this site there has been at least one good thread about differences and distinguishing between 8.2 posi chunks. Series ID'ing and the difference of bolt hole sizes / thread orientation.
But it might take a whole lot of creative searches to find it again - if even.
Maybe it was in Street Section , but I can't remember.

Monzaz was probably involved with it some, if you searched his post archive history you might find one or two discussions that could help.
64-65 section is pretty slim on activity, the whole forum itself is much slimmer these days.

I have my open diff out and available for comparison

[Baron Von Zeppelin]

Another thing to add in the mix of things to measure / verify -
the size of the bolt holes that secure the ring gear to the carrier.
There is Early and Late as mentioned in a previous post already.

To keep in mind, just because the seller states the rear came OUT of a 65 GTO , does not guarantee the rear was the original in that 65.. Differentials get swapped around and it could have been a 69 Differential ,,, for all anyone knows.

Ideally you want the bolt holes to be the same as your existing Early ring gear bolt holes.
To avoid any deeper modifications or buying another ring & pinion set (Later Version)

[John Milner]

There is a measurement from my open 8.2 carrier from my 71 Lemans. It had 3:08 gears on it.

[John Milner]

There’s one more picture measuring from the other end.

[AG]

I measured 1-7/8" on my 2.93-3.23 posi carrier. If you have a '65 carrier, it will have 3/8" ring gear bolts.

[72pontiac]

Originally Posted by AG

I measured 1-7/8" on my 2.93-3.23 posi carrier. If you have a '65 carrier, it will have 3/8" ring gear bolts.

Rather than 7/16 bolts on a later style?

[AG]

Correct, the change was sometime in 1969. The Eaton clutch style posi (3.36-4.10) comes with the 3/8" holes so if you use a 7/16" ring gear you have to drill the carrier.

[72pontiac]

does the bop lsd have the cone viewing windows

[AG]

What are the cone viewing windows? You can't see the cones from the outside in either of the 2 or 4 pinion posi's. You need to unbolt and separate the carrier to see the cones.

[AG]

What are the cone viewing windows? You can't see the cones from the outside. You need to unbolt the carrier to see the cones, see post #33.

[72pontiac]

Ok. Another style/make has windows you can see if the cones are bottomed out this one is after the repair and the cone isn't even into the window

[72pontiac]

Well I decided to buy it as he said I could have it check out and I have access to a lathe and felt comfortable I could make it good if it wasn't. Told him I wanted it but just tested positive for covid and as soon as I was over it I would come get it he said sounds great. 5 minutes ago he messaged he sold it. Oh well.

[Gary H]

I just bought an Auburn posi unit for a 8.2" BOP that will fit a 3:08 gear. Got it through Summit Racing about two weeks ago and it's already installed in a 67' GTO that has the original rear end in it.

[AG]

Originally Posted by Gary H

I just bought an Auburn posi unit for a 8.2" BOP that will fit a 3:08 gear. Got it through Summit Racing about two weeks ago and it's already installed in a 67' GTO that has the original rear end in it.

If you want to keep your current housing do this. If not, get a 12 bolt or '71-72 Olds 8.5".

[AG]

Power Trax is a good option and easy to install. Never used one, but feedback I've seen says they act like a Detroit locker which would be fine with me. Then you don't have to change the carrier and set it up.

[72pontiac]

Thanks everyone for the help.

[tallrandyb]

If you really really want an Auburn posi for a 3.23 8.2 right now and you want to buy one from Sweden, these guys claim they have two:

https://www.hansenracing.se/produkt/...ffsparr-598530

That converts to US $855.

And they replied to my email inquiry and said shipping would be $100 "International Economy".

[72pontiac]

Originally Posted by tallrandyb

If you really really want an Auburn posi for a 3.23 8.2 right now and you want to buy one from Sweden, these guys claim they have two:

https://www.hansenracing.se/produkt/...ffsparr-598530

That converts to US $855.

And they replied to my email inquiry and said shipping would be $100 "International Economy".

Actually Gary h was right summit has them accessible right now $439 I think it was.

[tallrandyb]

Originally Posted by 72pontiac

Actually Gary h was right summit has them accessible right now $439 I think it was.

Excellent! Yes it appears they are back in stock, they claim 10 available. Great!

I wonder why the product code changed or if there is a change in the internals. The Auburn I bought was a 5420114, these are showing 546099.