View Full Version : install 3rd gen firebird 9 bolt diff - wobbling left wheel & other problem


caribbean camaro
Jun 14th, 04, 09:29 AM
my friend has a 86 firebird - which he uses for parts - the rear has disc brakes and a posi - so he wanted to swap over to his 87 firebird one peg leg car

after straight swap - the left wheel wobbles seriously wrong at very little speed -

we thought axle must be bent but really do not know - there are no ugly or squeaking noises like bearings

he now wants to take it back off - and put on original one peg leg rear end

only thing is - he first thought he would swap axles and tried to remove small retainer bolt for the crossshaft in differential -

graemlins/clonk.gif it broke leaving unthreaded part of retainer bolt for the shaft stuck in cross shaft -

so we cannot remove axles or c-clip as the shaft is stuck in place on original one peg leg rear

QUESTION 1: can we re-insert threaded portion of retainer bolt (it screws back in without any problems) for the crossshaft to retain pin portion in crossshaft as originally intended and put one peg leg rear back into operation?

QUESTION 2: where to start looking for problems with wobbling left wheel analysis on 9 bolt rear?? I hear this is a good rear end and we would hate to not be able to make use of it in future

Wheels are in good stead - so its not the wheels itself - thats the first question I asked

Thanks for any help

big gear head
Jun 14th, 04, 12:37 PM
Yes, you can reinstall the broken retaining bolt and it will be fine. I doubt that you could have swapped the axles anyway because I think the original rear end would have been the 7.5 10 bolt GM rear end and the other one is the 9 bolt Austrailian Borg-Warner rear end. The GM rear end uses c clips to retain the axles, but the 9 bolt uses pressed on axle bearings to retain the axles.

caribbean camaro
Jun 15th, 04, 10:16 AM
Hi Freddie, its been a long time - trust you are well

Thanks for the info.

You got mail!