I am wondering if any one has done, or knows where to find the information to swap the GM 10 bolt to a ford 8.8 rear posi unit... i know some of you might be offended by this thread, and i appologize for that... its just some manufactors do it better than others.. i believe that the 8.8 and the 9" is a very strong and reliable rear end..... plus im parting out cougar and it has a Built 8.8 with 373 gears....

any help guys/gals

 

NO BODY!!!!

 

https://www.thirdgen.org/forums/tran...ord-8-8-a.html
Maybe this is what you are looking for.

 

I would guess you're not getting much response due to your wording. It's hard to decipher what you are wanting to do.

If you're talking putting a complete 8.8 under your f-body, then the thread link above should get you a considerable amount of the info you're looking for.

It is very difficult to swap rears under these cars due to their unique suspension system.

 

Yes i was wanting to swap out the stock original rear end and install the ford 8.8" rear end. the rear end was off of a 89-93 thunderbird supercoupe.. i had it installed on my 94 cougar for 2 years until the motor blew. i was just trying to be resourseful and use it on my 87 z28. It seems like a pretty detailed, complicated swap. however the winter is approaching and it would be a project for then. i have a complete rearend/suspension, rear brake set up. it sounds like that would be needed. i just dont to like the fact of the ford bolt pattern though... IDK. im sure the answers will come

 

shagwell, i like your quote BTW..

 

If your axles have full faced flanges(no extra holes besides the studs) you can have them re-drilled to the GM 5x4.75. I have done a set in a drill press by using a dual pattern wheel to align the holes. It's a time consuming process and requires a couple good drill bits(must be done in steps up to size); axles are very hard material.

The control arms and spring perches are the easy part, getting the tq arm mounted solidly/securely is very difficult.

 

If I'm not mistaken, the 89-97 Thunderbird, and Cougar came with IRS, not a live axle setup, I've owned three of them, so I'm pretty sure. If you want to go that route, you've got a lot of work ahead of you.