Originally Posted by whitetiger
the diff doesnt just work when you are turning. if you accel hard, the diff will tr to preven the one whell with the least amont of traction from spinning out of control as it would in a non-limied slip diff. the sound is could be the clutches slipping allittle and heating up while transfering power. it also could be the whole diff housing twisting under power, ot maybe the rear u-join on the drive shaft twisting. we know its happening under power only so its not the suspension. its somewhere in the rear of the drivetrain.
Yeah.. I hear ya. Mine doesn't make any noise at any other time, however... even when turning. Only at higher RPM under load.
I would guess that you are right with the thought of it being the diff housing rolling upward... Maybe it's hitting the pinion nose snubber or bumpstops.. and tranfering noise/vibration into the cabin through the floor.