Replacement for G80 limited slip

[4silverado]

Got a question for you. 2004 Silverado 1/2 ton 2WD. G80 limited slip is shot. I get a one wheel peel, right side spins. If I go back with a limited slip, what are my options? I'm not against another G80 but I have proof they don't last. I'm looking for cheaper options versus a full locker.

 

[ORVietVet]

Back in the day, heard good things about Eaton components.

https://www.eaton.com/us/en-us/catalog/differentials/eaton-detroit-truetrac-differential.html

 

[Cadillacmak]

Got a question for you. 2004 Silverado 1/2 ton 2WD. G80 limited slip is shot. I get a one wheel peel, right side spins. If I go back with a limited slip, what are my options? I'm not against another G80 but I have proof they don't last. I'm looking for cheaper options versus a full locker.

I blew up my daughters Gov Bomb doing burnouts in the road, that was in a 87 full floater in a 74 SBLB. Those are carrier specific so I had to pull the Gov Bomb out of my parts truck. Are the smaller axles carrier specific also?

 

[4silverado]

That might be correct. Mine has 3.42 gears. I think 3.73 and higher is a different carrier.

 

[ChrisRHC]

Go truetrac and don't look back.

 

[stutaeng]

Detroit Truetrac is what I hear gets best reviews.

I've had good experience with all my G80s though. Has it worked at some point? I think it uses the gear oil w/o the friction modifier?

Have you removed the cover for inspection?

 

[4silverado]

Detroit Truetrac is what I hear gets best reviews.

I've had good experience with all my G80s though. Has it worked at some point? I think it uses the gear oil w/o the friction modifier?

Have you removed the cover for inspection?

I hadn’t removed the cover yet. I’m not hearing any grinding out of it; not that I would hear anything with me being half deaf and a cherry bomb under the truck. It did work at one time. Truck has 191k on it. I think it’s gone on siesta recently. I’ve been doing a fair amount of research and am really considering just rebuilding it. Rebuild kits are $250. Used axles go for $300-500 but you never know what condition you’re going to get. Limited slips are going around $500 and up; these are out of my price range.

 

[someotherguy]

I'd pop the cover and inspect for broken parts before buying the rebuild kit.

Richard

 

[ORVietVet]

Yea, you gotta remove the cover anyway. Maybe have the kit there and be able to return if you pop the cover and see a rebuild will not be a complete fix.

 

[stutaeng]

Is it the clutches that wear out on the G80? I remember there was company that sold rebuild kits for them?

I can't remember what those clutches do or how the thing works at the moment.

And not that it matters, but I thought these G80s on the trucks are actually locker-type of differentials, even though everyone calls them "posi." Possibly because of the "clutches"?

I think when the G80 lock, both wheels turn at the same rate, 1:1. On the posi or LSD, there's a certain slippage between each side, hence their name.

Didn't help that GM also used the RPO code G80 on the Camaros, which actually did have a LSD. SMH