Not really sure where to ask this one???

http://buy1.snapon.com/catalog/item.asp?P65=&tool=&item_ID=11057&group_ID=1412&store=snapon-store&dir=catalog LOLLOLLOL

...If you really want to find the noise. Just kidding.

I recently replaced my stock diff mount with the Ron Tyler type mount. (Had to make it) http://alteredz.com/drivelinemods.htm#Differential_Front_Mount

Like it says the measurements are different for an early Z so I just went with the basic idea. I think the holes for mounting were spaced at 1.811" on my 2/71. Had to fab the mount on the car. Used some throwaway Dixie Chopper lawnmower blades for the 1/4"x 3" stock. Total cost $15 with GM mount!

The Tyler mount is the BEST thing I ever did for my rear end. It's pretty quiet too. I get a little noise from the old ring/pinion but there is "0" clunk. (Noise supression is pretty good) I've heard stories of new stock diff mounts tearing up days after install. (Rough driving)

In your case I might try taking your halfshafts to a driveline shop and have them look at them. It's probably them or some slop in your diff. (As mentioned above) Distant third/fourth place is your new mount and the diff/mustache bar bolts being loose.

You'll get it stomped out eventually.

Jim

Edited August 15, 200816 yr by JimmyZ