6spd

iTrader: (3)

replaced my rear end fluid, replaced the U-joints, took it to a tranny shop.
I primarily get this clunk sound after the car has been sitting over night and I back out of the drive way.
as Im backing into the street up a bit of an incline, I let go of clutch and press gas and it puts a load on whatever is clunking. Thats when it happens. Or, if I'm parked on a bit of an incline and start to back "up" the incline.
Could the tranny mount be the issue? Its the stock mount and looks like its just fine, but there is 120k miles on it.

Bigbee

I understand that mounting bolts on the torque brace that goes from the tranny to the diff can get loose and make a god awful clunk.

Caribe

iTrader: (1)

Check your panhard bolts also.

6spd

iTrader: (3)

I will check both of those.
Thanks for the ideas

chrysler kid

iTrader: (14)

Check your sway bar end link bushings for cracks. My old trans am use to thunk something awful when weight shifted in the car from left to right

T-56SLPSS

mine did the same thing. ended up being my duals hitting the driveshaft under load