Some locking differentials work with a kind of ratchet action,and these are noisy by nature. Their popularity is from their very strong and positive function. It should be relatively easy to convert to a different kind of "limited slip". I wouldn't give up on posi-they're always a good thing. (In my opinion.) Like Heavyhauler,Tim and Roy said,it probably is a posi,I'm just suggesting it could be an actual "Detroit Locker,in which case there's not much you can do to make it quieter. Send some pics of the gear case if you open it up,that'll show us what it is.
Speed
