95 6.5L K2500 4x4 what kind of rear diff?
I was wondering what kind of rear diff is in my stock 95 6.5L 2500 Sierra 4x4 because I've been looking at the HD2500 trucks and they come with a posi rear. Not sure if mine is just a regular open diff or if its some sort of weak limited slip. can anybody tell me. what kind of options do i have for making it a posi rear? make just get the diff from a newer 2500 HP truck and make it work with the right gear ratio
Look at your RPO codes...
Being a 6 lug, you have a semi-floater, but could still have a locker.
For the locker, the easiest way to tell is to look up your codes on the glovebox sticker. Look for a code "G80" - this indicates you have the factory locking differential. You can also tell gear ratio, GT4=3.73, GT5=4.10, GU6=3.42, etc.
Also, I'm not sure the newer HD trucks automatically come with a locker, just seems that most are equipped that way.
Hope that helps.
Joe.