If I coast into the corner it doesnt do it. Say I pull into my driveway, which is a little steep. Ill slow down to pull in, turn then accelerate up the driveway ill fell it shudder right under my seat for a second then it goes away. If im making a k turn in my driveway ill feel it shudder while turning and accelerating.

 

Do you have a factory limited slip, or perhaps an Auburn? Reason I ask is that Auburn recommends NOT using synthetic in their LSD but instead regular oil with the friction modifier/LSD additive added in the prescribed amount.

I had an Auburn in my Exploder. I changed the lube one time, and didn't put enough of the additive in. When I turned, especially really tight turns, you could hear and feel the limited slip binding and releasing a couple of times a second. Kind of a "chunk-chunk-chunk-chunk..." noise.

Once I changed it again and put the proper amount of additive in, it was quiet and smooth again.

 

it has the stock anti slip rears with the 3.92 gearing. Im going to look at it now and try to find what is wrong. thanks

 

I don't think that the synthetic gear lube is a problem with the factory setup. Seems to be an Auburn issue only.

 

Ok, I think I may have solved the problem. I took off the driveshaft so I could check the u joints accurately, there was no play. I scratched my head all afternoon since everything appeared ok, so my problem pointed to the rear end. I checked everythign and everything looked ok, so I decided to pick up 4oz. of friction modifier to add to the synthetic valvoline I just put in the other day. I figured it wont hurt, because if I have to rebuild the rear clutch packs etc. then I may as well try this. So I added the 4oz. of the modifier and viola! no more chatter!!! Truck feels great. I tried for about an hour to get it to chatter where it would before, and I couldnt get it to do it. Thanks to all of you guys who took the time to help me!