Rear Axle Identification

Texas82GP

Texas82GP

Comic Book Super Hero
Supporting Member
Apr 3, 2015
4,589
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Spring, Texas
#81
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
24,191
9,405
113
Kitchener, Ontario
#82
I have an 8.2 rear in my GP. It's from a 67 Chevelle, the 64 to 67 is 2.5" wider than a G body rear and the 68 to 72 Chevelle is 4.5" wider than the G body rear. I have UMI conversion uppers and UMI lowers with a Roto Joint on the axle side.
 
T

tricrick84

Not-quite-so-new-guy
Aug 3, 2016
7
0
1
#83
Well dam. Thanks for the clarity fellas. Looks like I'll be selling it soon.
 
bill cook

bill cook

Apprentice
Apr 22, 2016
62
15
8
#84
We're do I find the ratio # on. a 79elky,had 200c trans now gone,and a 350 ?
 
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
24,191
9,405
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Kitchener, Ontario
#87
it's not a good picture but you will see it on the crown gear.... you divide the number of teeth on the crown gear (which will be the larger number) by the number of teeth on the pinion.

proxy.php?image=http%3A%2F%2Fnastyz28.com%2Ftech%2F1541ring.jpg&hash=991602eeed17b3d7ee68b477db0caa38
 
bill cook

bill cook

Apprentice
Apr 22, 2016
62
15
8
#88
it's not a good picture but you will see it on the crown gear.... you divide the number of teeth on the crown gear (which will be the larger number) by the number of teeth on the pinion.

proxy.php?image=http%3A%2F%2Fnastyz28.com%2Ftech%2F1541ring.jpg&hash=991602eeed17b3d7ee68b477db0caa38
Thanks
 
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
24,191
9,405
113
Kitchener, Ontario
#89
you may have the RPO code but with a 30 year old car I always like to check cause who knows if the rear end gears were changed, plus I think it's a good idea to change the rear end oil since we don't know how old or what type of oil is in the rear end
 

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