theres a 92 heritage in the junkyard here and when i went to get the axles, i realized it has bolt on wheel cylinders unlike the clip style of my 89...it also seems to be a 1/2 inch wider then my 89 rear, but narower then the 95 firebird with drums in the yard also. (the firebird seemed to be about 2inches or so wider on each side compared to my 89) so its not as wide as a 4th gen but its wider than my 89....it doesnt look like the rear has ever been removed either....just wondering,

 

starting in 91, the s10 pickups received modified backing plates that allowed for bolt-in wheel cylinders.

as far as i know, no thirdgen ever received bolt-in wheel cylinders. i could be wrong though.

 

yea i knew about the s-10 change over, but not the f bodys....it cant be a 4th gen rear because its a 4 in too narrow. gues it was a late changeover or something... anyone out there that has a 92 or 91 please take a look...

 

my 91 camaro is clip in.

I never did any brake work on my s10, so I'm not sure on it.

 

im wondering if its just a92 thing... i did look in a parts book and it lists the clip style for "without performance package"and it shows a metric pipe bolt style for the performance style....