I have a 1982 Olds Cutlass Calais

[Shaggy]

I was just wanting to to know what other vehicle will the rear end match underneath of my car but has a posi

 

[Doug Chahoy]

All Gbodies with the GN and 442/Hurst 8.5 being the strongest. You can have a Ford 9 inch made by Quick Performance for decent money.

 

[olds307 and 403]

The usual, affordable upgrade is the Monte SS 7 5/8" rear, either 3.42 or 3.73 for 85 and up. They are slightly stronger, still cheap but a posi will be harder to find. Even a good number of the 8.5" came without posi.

 

[Shaggy]

The usual, affordable upgrade is the Monte SS 7 5/8" rear, either 3.42 or 3.73 for 85 and up. They are slightly stronger, still cheap but a posi will be harder to find. Even a good number of the 8.5" came without posi.

Okay it seems I have to do some more research on what type of rear end I have in my car

 

[lilbowtie]

What is your intentions w/the car - you can always put posi in.

 

[Shaggy]

What is your intentions w/the car - you can always put posi in.

Mostly a daily driver but on the weekends of life get on or in a little bit

 

[303'505rollin]

Pictures, I used to have a 83 calis black with red interior had it for 2 months before I sold it to some peeps from cali after I fixed the transmission, changed from 3 speed to OD

 

[lilbowtie]

Okay it seems I have to do some more research on what type of rear end I have in my ca

You have a 7.5 rear end unless someone has changed it. Unless you have any power it will serve you well.

 

[69hurstolds]

Even a good number of the 8.5" came without posi.

The reason for that was the inclusion of the "Select-a-unit" ordering process in the early 80s. To make it easier for the dealerships to order cars with value packages. Like a tier system. You just added different levels of option packages. But even at the highest option package, unfortunately, there was no "Kitchen Sink" option that included everything. G80 (limited-slip) was one of the few options that was not included in the "Select-a-unit" package, for whatever reason. Thus, G80 was a stand alone option on G-bodies. I'm not aware of any G-body that rolled off the assembly line with it standard. There may be some, I'm just not aware of them. Can't be many, if at all. So unless the guy in charge of putting in car orders was savvy enough to know, or a customer asked for it, they usually didn't bother with putting G80 on the order sheet. As such, a great many 442, Monte SS's, GN's, and others, didn't come with posi.

 

[64nailhead]

The reason for that was the inclusion of the "Select-a-unit" ordering process in the early 80s. To make it easier for the dealerships to order cars with value packages. Like a tier system. You just added different levels of option packages. But even at the highest option package, unfortunately, there was no "Kitchen Sink" option that included everything. G80 (limited-slip) was one of the few options that was not included in the "Select-a-unit" package, for whatever reason. Thus, G80 was a stand alone option on G-bodies. I'm not aware of any G-body that rolled off the assembly line with it standard. There may be some, I'm just not aware of them. Can't be many, if at all. So unless the guy in charge of putting in car orders was savvy enough to know, or a customer asked for it, they usually didn't bother with putting G80 on the order sheet. As such, a great many 442, Monte SS's, GN's, and others, didn't come with posi.

Hmmm, every 8.5 G-body rear I've taken apart has been a posi. But there are 2 in that group lol.