I replaced the posi unit in my 8.5 rear which fixed the slipping problem but I still have a howling as I accel and decel. There is almost a grinding noise that comes and goes also and I'm trying to find out what the problem could be. The car had leaked out the rear fluid and ran wiping out the clutches and gears. I replaced those but left in the stock ring and pinion, could this be the problem. The axle bearings felt ok as there was only a small lip on the axle itself. They were re-greased and installed.
What should I check to track down and fix the noise? I had driven teh car once and not heard anything but after that I replaced the pinion bearing and now the noise is here to stay.
What should I check to track down and fix the noise? I had driven teh car once and not heard anything but after that I replaced the pinion bearing and now the noise is here to stay.