So you're saying a G80 in a Camaro and one in a van or a one ton pickup are
all the same? My Isuzu pickup, factory GM V6 powered, has a G80 locking
differential. Don't think it's an Eaton:) http://www.itog.com/xr-001.shtml
My 2002 Z28 has a G80 differential. Don't think it's a Gov Loc:) I thought
G80 was just the RPO code for a limited slip differential.
Big, there is no posi any more they are all Eaton lockers, possible a Trans
Am oR SS Camaro may have had a different set up in the newer ones, but all
the light trucks are running this with GM since at least 1992. Gov. lock
system, not full time limited slip.
I can't speak for the camaro, but all the trucks use the same design
adapted for each rear end, whether it be a 7.5, 8.2, 8.5" 10 bolt or a
9.5" , 10.5", or 11.5" 14 bolt. I don't know if there's a G80 for
Dana 60's or 70HD's.
an excerpt from http://www.traction.eaton.com/prod2.htm
"Where can I buy a mechanical locker?
The Eaton Locker is option code G80 Locking Differential on GM light
trucks and SUV's. Go to Chevrolet, GMC, Cadillac or Oldsmobile
websites for more information."
This diff does NOT require a limited-slip additive. Matter of fact,
the GM manual specifically says to NOT add friction modifier. Not
sure if that's the problem, just passing along useful info for next
You are right Mike, only the old style posi used the additive, and if not
used, the diff as you know, would chatter when hot on tight turns. Meanwhile
we still are not sure what is actually the problem here.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.