Is a early 80's gbody posi worth any thing?

1of1547

Village Idiot!!!
Joined
May 25, 2001
I can get a early 80's regal station wagon with a posi in it. I know that it is not a 8.5 rear. I assume that it is 7.5 rear. Is it worth my time the to get and pull it? Is it the same as a Monte Carlo SS?
 
How can you tell what gear ratio is in it. I have the window sticker, but it doesn't have any ratio. Did they use a service parts label like the 1987's do.
 
The window sticker should have RPO codes. Most likely GU1 which is a 2.41 thru GU6 which is 3.42
 
Mark the driveshaft, jack up the rear, put in neutral, spin both wheels together once (or more) and count how many times the driveshaft rotates (and divide by the number of wheels spins) .
 
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