Between a 87 and a 89...

I know the calipers & rotors are different, an I think the backing plates flanges are different, but what about...

axles?
ring gear?
pinion gear?
housing? (is are the backing plates & flanges different?)

Basically...Is there anything from the 87 9-bolt rear, I can salvage, for a 89 rear?

 

I have a 90 and it's got the 4-bolt backing plate. I would suspect that all of those parts are interchangeable. I would salvage the whole kit & kaboodle if I had the opportunity. sort it out later. opportunity only knocks once.

 

Everything is interchangeable, there were no changes in the 9 bolt throughought the production run.

 

Cool. I guess I'll just ditch the calipers & rotors, and keep everything else, for any future needs.

 

what about inter changeability between the 9 bolt and 10 bolt. i heard that parts are hard to find for the 9bolts and was wondering what exactly can break that isn't interchangeable.

 

Nothing is interchangeable between the 9 bolt and 10 bolt.

 

is it just the guts of the rear end that isn't interchangeable or is it stuff like wheel bearings and brakes too?

 

EVERYTHING is different. Housing, gears, rotors, calipers, seals...You name it, it's different, between 9 & 10 bolts.

 

Rotors and calipers are the same, but they're not really part of the rear end.

 

I don't think so....10 bolts didn't get PBR calipers. Maybe the iron calipers, of 88 & older swap, but not 89 & later.

 

Yes, all 10 bolts with disc brakes got PBR calipers starting in 1989. There are no differences in the brakes between 9 bolts and 10 bolts of the same year (except for the backing plates).

 

That's new to me, and I'm no newbie to 3rd gens.

 

We all get to learn something new every now & then....

Here's one right here.

The pic sucks, and doesn't show the cover; but you have my word of honor, it's a 10-bolt. Came from about a 91 or 92 GTA. Yes I'm quite sure it's a 10-bolt: 10-bolt gears (just the stock ones for the car, 3.73) fit it, a 10-bolt Eaton posi fits it, and a 10-bolt T/A cover is on it. Not only that, it has 10 bolts.

 

Oh no...Not Sofa...

GTAs didn't come with 10 bolts to begin with...

 

Oh yeah they did, in 90-92. Last year for the 9-bolt was 89.

Hey looky there!!! 2 things in one day. Circle this one in red on your calendar.

 

Don't bother Sofaf***ingretarded...

My belly button lint holds more weight than your "ideas"....You live to stir up ****, and enjoy it, huh?

 

 

I have a 1990 IROC 5.7L, it has the 9-bolt BW rear axle.

 

Right; a VERY VERY few 90s, mostly at the VERY beginning of the 1990 production run in 1989, got leftover 9-bolts from 1989. Yours must be one of those few.

Not sure what Stephen is all about, there? All I'm doing is showing pictures of things that EXIST and quoting well- and widely-known production facts; is there a problem with that? Sorry if facts hurt.

 

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I AM NEW TO THE WEB SITE, BUT NOT 3RD GEN CAMAROS AND TRANS AMS, BUT I JUST GOT A 88 GTA AND THE REAR WAS LEAKING AND IT THREW ME WAY OFF WITH THAT REAR ITS A 9 BOLT BW, THANKS FOR THE INFO