I have the posi and axles out of an 87 camaro with 2.73 gears and drum brakes. I want to swap the posi into my 82 Z28 camaro with open 3.73 gears anddrum brakes. What is involved? Can i just take out the differential out of my car and just throw in the posi? Do i have to use the 87 axles? Is it even possible, or do i have to have the rear "setup" again?

THanks

 

You need a ring gear spacer, to put the 3-series gear onto the 2-series carrier. You don't need a gear setup in all likelihood; check the backlash to be sure. The pinion won't need to be disturbed in any case.

Splines and axles are the same. Use the best axles out of the 4 (all 4 are the same).

That, and about 2 quarts of fluid and one thing of additive, should about do it. I'd recommend putting new axle bearings and seals in it while you have it apart.

 

Great thats exactly what i want to know. So the axles are the same, awesome!!! Now where can i find this ring gear spacer?

 

RingGearSpacers'R'Us.

http://www.drivetrainspecialists.com...=28&cat=GM+7.5 IK83-0750

I post this URL so often, these guys should pay me a commission :sillylol:

 

Do you know any part numbers for the ring spacer. I want to try and get it locally if i can. Can order it at napa or schucks; or do i have see a driveline specialist?

 

I ordered one from the local speed shop a few years ago. It was about $50 then (1999). They probably got it it from DTS.

 

hello . i have the 2.73 open i believe . LG4 . i want to make it a posi and put in 3.42 or 3.73. what all do i need >> ?? any help will be appreciated .


thanks !!

 

Why would you revive a 4 year old thread for a new question?

You will need a 3 series posi, and the gears. Also a full rebuild kit, which includes shims, crush sleeve, bearings, and seals.

 

at least he used the search, gotta give him that.