how can i find out whether I have a positrac, limited slip, or one legger rearend?

 

glove box has a sticker. it should either be lsd or open.

 

if it has anti slip on ur sticker thats lsd

 

okay so my sticker says "anti slip differ". "corporate 9" it does not say LSD, so does this mean I have a posi rear diff.

 

No that means u have limited slip. Easiest way to be sure is go do a burnout if both tires spin u have a limited slip

 

I went out and did as you suggested, they both spun on dry ground, I thought this meant that I have a posi not LSD?

 

thats what i thought too at first but a bunch of people on here said that if both tires spin that means u have lsd so thats what im goin with

 

OK. This is really simple. "Posi" is an annoying term that GM used a long time ago, it's the same thing as a limited slip. "Anti spin" and "Trac lok" are also annoying names for limited slips.

 

It's so annoying, so many people wonder if they have a posi or LSD. It's the same thing, like you said, something that GM used to call their LS. You don't have a posi... none of us do. It's either a LS, open, or locked if you install a locker. Not posi.

 

thank you very much for explaining that