[mgarblik]

Originally Posted by 'ol Pinion head

'83-87 G-body 8.5 rears which were factory assembled with a posi should have a #8 "S spring" posi carrier. Have built up several 8.5 G-body rears that are living in 10 sec GN's & T-types, quite a few more at that level as 8.5 A-body & X-body rears.

GovLocks were the junky Eaton swing out lever style posi units that were optional in GM pickups & SUV's. Have examined many many of this style carrier blown up, carrier destroyed, as well as & taking out the ring & pinion. In quite a few cases, the destruction took out the housings LH cap, & occasionally, the housing where the LH cap bolts thread in. Too many let go in putt-a-round vehicles, no way I will assemble a pickup rear with one, esp for performance use.

Below are most of the GM factory uses of the Eaton GovLock, occasionally, one will run across such a carrier that has been later installed in GM rear that would have originally built as a single track or was originally assembled with a traditional clutch style posi, or a Warner Motive or Auburn cone type posi.

- earliast original version I've run across was in a '71 1/2 ton Pickup rear, 8 7/8 12 bolt Pickup (not car)
- 8.5 1/2 ton (no Big10) Pickup/Blazers beginning w '77 models,
- there's a huge 10.25"(?) version which was used in the late '70's-mid 80's GM 3/4 ton truck rears.
- the S10 7.5/7.625 versions, have ran across several of these rigged into '82+ F-body rears.
- 30 spline 8.5/8.6 GovLock used up into the early '00's is latest application I've run across. Rebuilt an '03 Avalanche rear last month that it's GovLock decided to let go...PITA.

Thanks for clearing up the application of the Eaton locker. I knew you or a few others would have the straight story on that. So I guess it's a mystery why we had a few failures on the GN cars? It happens. If a driver does enough stupid stuff, anything can break. Will say I was surprised that car stalled and sold at 70,600.00. That's less than the 2006 Honda S 2000 I mentioned earlier in the tread. Go figure. I'll take the slightly dirty, poorly stored GN any day over a 4-cyl Honda, Miata look alike. Or neither in reality. I think that GN cleaned-up properly would top 100K in a proper selling atmosphere. E-bay may not be the right venue for it. Guess that's why I lose money on every car I buy.