I need G92 axel measuremnts driver side and passenger side. Also need to know the flange diameter Bolt size and bolt circle. aswell as if my studs are pressed or screwed in.

Thanks in advance

 

G92 is a RPO code.......

 

The bolt circle is 5 on 4.75", the studs are pressed in, 12mm x 1.5 IIRC.

 

WOW, Your so helpful. G92 = 9bolt, 3.45.

Thank you.

I also know that it's 28 spline, just need lengths and thickness.

 

G92 doesn't mean a 3.45 9 bolt in every year, it just means an optional ratio.

 

meant 3.45, 9bolt

 

All third gen axles are 30-3/8" long left and right. No other GM 7.5/7.625 diff has axles that length.

You can buy aftermarket axles from HOME PAGE: Tom's Differentials
26 or 28 spline. You can put 28 spline axles into a 82-89 10 bolt diff as long as you use a 28 spline carrier. I don't know what the current price is but they used to be $125 each a few years ago.

 

He's looking for 9 bolt axles though, which are different, aren't they?

 

Ah. OK. Ignore the remark about the aftermarket axles

I doubt the length would be the same then since they're 2 different diffs with the same total width. When one uses c-clips and the other bolts on from the bearing flange, I can't see the length of the axles being the same.

I have no more 9 bolt parts around to take measurments.

Is this 9 bolt diff in your 91 or did you find one without axles?

 

Axle shafts on a 9-bolt are different length for the left & right side.

 

I'm missing something here. Help me understand where I overlooked anything that points to this being a 9-bolt.

You seem to have a 91 model car. The 9-bolt's last year was 89. How are we supposed to assume that it's a 9-bolt?

More than likely, it's a 10-bolt.

Your claim about "G92 meant 3.45" is WRONG, by the way; 350/auto cars with G92 in years that got 9-bolts DID NOT get 3.45 gears, and 90-up G92 cars with ANY drive train combo DID NOT get 3.45 (a 9-bolt-only ratio), so the vast majority of cars with G92 DID NOT get 3.45 gears. But it doesn't really matter, it's totally irrelevant to the issue at hand. Cars with that RPO got the same length axles as cars without it, and cars with all ratios got the same length axles.

The axle length for a 10-bolt in one of these cars is approximately 30-5/16". Both sides are that length. Most likely we can forget about the whole 9-bolt business. They should have 28 splines.

 

I thought the original post about the RPO G92 reference and rear axle info was dumb to start with. It seens like he has NO idea what he has. 9-bolt or 10-bolt????

 

Yeah, that's almost like something a Firebird guy would do on the History board!!!

 

Your right, 89 GTA 9bolt disc rear to go into a 91. The axles in the rear are bent, causing a vibration at 130 - 140 km/h. I'm being the middleman for a friend as his car is the one with the problem(both 91 verts) and we both have identical rearends.

I guess rear end swaps aren't common down there. You all must love your drum rears.

 

also, I need the measurements to measure custom axles from moser. Can;t seem to find 9bolt replacements.

 

What's drum brakes got to do with it??? What gives you the idea that any of us like THOSE?

"Down" where????

I've got PBR rears on my car; in fact, I have the rear end out of a G92 91 or 92 GTA under it, except that I took out the crappy G92 3.23 gears and stock Auburn posi, and put an Eaton HP carrier and the stock gears for my car in it (3.73). No weenie 3.4x for me. You must like sluggish acceleration.

But I digress. Sorry, I don't have the axle lengths for the 9-bolt.

You might do better to just buy a whole rear off the classifieds or something, after all it doesn't matter whether it's G92 or not, people practically GIVE AWAY their 2.77 ones.

 

What's drum brakes got to do with it??? What gives you the idea that any of us like THOSE?[/quote]

I'm driving a convertible, never came with disc rear stock. so 9bolt would be an upgrade.

U.S.
Nah, daily driven car, 3.45's will help nicely from stock 3.08's and my own being 2.73's

After shipping I'll get assraped. Also reason they GIVE their 2.77's away is it's 3 stage carrier, alot harder to find parts for them

 

I thought these were for somebody else???You're in Vancouver? meaning you can practically SEE Seattle on either clear day in any given year? Have you tried looking for one down there, and driving down and picking it up? Maybe look through the classifeds in their Sunday papers or something?

Man I sure am glad I don't have those pitiful low-numbered gears like those lousy G92 ones.

I KNOW that's why people practically give their junk 2.77 rears away, that's the VERY REASON I suggested it. You can pick em up dirt cheap. Nearly free sometimes, in fact I might have seen them for free in the classifieds on this sute, from people that just want that junk GONE. What's the carrier got to do with anything? I thought you were looking for axles? They're ALL THE SAME, regardless of the ratio or the carrier.

Dude, you can get alot more help with alot less trouble, if you'll just come out and tell us what you really want to know, without trying to come off as a superior being or something by posting some irrelevant RPO codes from somewhere that have nothing to do with what you're working on, and then talking down to people like they're morons because they can't read your mind about what year rear you're swapping into some other car (of course, some of us like me are just morons period, but that's a different matter...). There's plenty of people around here that can out-superior you any day of the week, and twice on Sunday. Better be careful or some one of them will come lay down the smack on you.

 

If you need replacement 9 bolt axles I have a set. You can just have them, I parted out the rest of the rear last spring. You pick them up or pay for S&H and they are yours.

I live in Dixon Illinois.

If you want them email me at "my3rdgen" at hotmail dot com.

Hurry up, let me know if you want them, you're lucky, cause I was going to take the rest of the rear to the metal yard this Saturday in order to clean up the back yard for a "last get-together of the summer" on Sunday.