[C2] Deciphering rear axle code
Thread Starter
Burning Brakes
Joined: Feb 2015
Posts: 769
Likes: 184
From: Vancouver BC
Deciphering rear axle code
I crawled under my '67 coupe and read the code stamped on the bottom of the differential carrier:
AW N 02 9 M
Can anyone decipher this code?
As best I know, the ratio is 3:08. But my car is an original base engine small block car with Powerglide.
I suspect a previous owner replaced the differential as it has the big-block type yokes with caps and bolts.
If my diff was changed to the big block type, what would be the advantage of doing that? Is it stronger? In what way? Does this mean I can do burn-outs without worry about blowing up the rear end?
Thanks for sharing your know how with me.
.
AW N 02 9 M
Can anyone decipher this code?
As best I know, the ratio is 3:08. But my car is an original base engine small block car with Powerglide.
I suspect a previous owner replaced the differential as it has the big-block type yokes with caps and bolts.
If my diff was changed to the big block type, what would be the advantage of doing that? Is it stronger? In what way? Does this mean I can do burn-outs without worry about blowing up the rear end?
Thanks for sharing your know how with me.
.
Le Mans Master
Joined: Nov 2015
Posts: 7,508
Likes: 2,660
From: Really Central IL Illinois
Just curious.
Team Owner
Joined: Oct 2000
Posts: 38,897
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From: Washington Michigan
Le Mans Master
Joined: Nov 2015
Posts: 7,508
Likes: 2,660
From: Really Central IL Illinois
Is the corvette 8.2" ring and pinion interchangeable with the 8.2" 10 bolt from a GM passenger car?
Couldn't resist learning more while I have you on the hook.
Ron
Le Mans Master
Joined: Dec 2004
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From: Pittsburgh
2024 C2 of the Year Finalist - Modified
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Here is what I have for a quick reference.........Have a great weekend!!
Last edited by dcamick; Feb 1, 2020 at 08:58 AM.
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,927
From: Washington Michigan
Thanks John, I was thinking maybe they went to the 12 bolt ring gear (8-7/8") and pinion. I never could understand why they didn't put the same gears as the 12 bolt when it came out, but then again, probably bean count.
Is the corvette 8.2" ring and pinion interchangeable with the 8.2" 10 bolt from a GM passenger car?
Couldn't resist learning more while I have you on the hook.
Ron
Is the corvette 8.2" ring and pinion interchangeable with the 8.2" 10 bolt from a GM passenger car?
Couldn't resist learning more while I have you on the hook.
Ron
Thread Starter
Burning Brakes
Joined: Feb 2015
Posts: 769
Likes: 184
From: Vancouver BC
What specifically are the differences between the small block diffs and the big block (heavy duty) ones?
Any guesses as to why a the previous owner would have put a HD (427) rear end in his small block car?
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Thanks Greg for deciphering the code on my differential. Next I'll check the housing cast number to confirm.
What specifically are the differences between the small block diffs and the big block (heavy duty) ones?
Any guesses as to why a the previous owner would have put a HD (427) rear end in his small block car?
What specifically are the differences between the small block diffs and the big block (heavy duty) ones?
Any guesses as to why a the previous owner would have put a HD (427) rear end in his small block car?
