I know it for a 3rd gen fbody but don't know what type i think its from gm cause a guy that used to work at a chevy dealer gave it to me....thanks

 

that would be a goveror style limited slip unit. what size rear is it for?

 

for the 7.5

 

it came brand new in box little surface rust thought, Is it a good unit??

 

i'm not quite sure that is out of a third gen. all of them used the spring/clutchpack design. it may be out of a fourth gen.

 

It's probably out of a S truck, although a few of them found their way into these cars in the early years of their existence. That's the dreaded useless POS known as the Eaton Grenade-Lock (Gov-Lock according to its mfr).

It acts like an open diff, i.e. no clutching action whatsoever, until the difference between the RPMs of the 2 axles exceeds about 100 RPM. At that point it attempts to lock up. Which means, no posi action whatsoever from a stop.

Obviously, quite good for a 4WD type situation, in mud or something, where there's no traction; but a VERY VERY BAD design for pavement. It WILL turn itself to shrapnel if used in a high-power application on asphalt or concrete. Even a 6-cyl like the ones in S trucks will grenade them easily.

DO NOT buy it thinking it's going to give you better traction off the line.

 

And that looks like a 2 series one besides.

Like most "free" things, there's a reason it's free.... namely, it isn't worth anything to anybody.

 

yea i've heard many people with limited slip in their s-10s complain about spinning one tire while powerbraking, guess this is why. glad i went with an auburn pro

 

and try scrubbing it with a toothbursh and some gear lube, the surface rust should come off and the gear lube will sink into the poruous carrier and you won't have to worry about it. when i cleaned off my old open carrier with brake clean and then soappy water it got surface rust with in 5 minutes. scrubbed it down with a toothbrush and gear lube and it looks like new

 

i also have my old posi unit if anybody wants it. it has no rust on it though

 

I'll take it

 

i had it posted in the classifieds. nobody bit there. i have a local guy that wants it. if he doen't have the money tomorow, i will let you know. $125 includes posi and 3.23's with 40K miles.

 

My old Z28 had one, dident last too long. I havent bothered to see if my new Z28 even has posi. Shame on me.

Clean it up Ebay it in the box and get one that will last more then a couple burn outs.