what is goign on with this thing!?

[trbodsm]

ok so my drive train is not to happy right now...when i get on it alittle bit my transfer case sounds like its making this grinding noise almost like its not being able to transfer the power to the rear wheels and at the same time the transfer case is doing this the rear wheels are umm how do i say shuttering? this is what i have done so far to try to fix this problem: new transfer case, visous coupler (in the tranny), u joints carrier barrings, tires, and the clutch....the hole reason i replaced the clutch with this hole thing is because it feels like the clutch is slipping but its brand new and still the same problem is occuring!! ok so just a run down transfer case is making noise, feels like clutch is slipping, rear end shuttering........please help

 

[4pistons]

Read through this entire thread and see if your problem is the same thing. http://www.dsmtuners.com/forums/showthread.php?t=174508

Rick - '91 GSX

 

[trbodsm]

I work at a dealership and we put the car on a lift and tried to stop the tires while it was in the air, yes i was hard but i was able to completely stop one of the rear tires while the car was in gear...The car has the rear problem all the time not just on sharp turns but im taking it to this tranny guy today that lives by me so hopefully he can tell me whats wrong with it...oh yeah the one tech at my work thinks its the center diff me i think its the rear end but ill have to try those test you gave me and we'll go from there