ok so if im stoped and hit the gas hard it makes a loud clunk that you can feel before taking off. its almost like the driveshaft gets caught up or something.
i can feel/hear it more towards the tranny end but im not sure if its comming from there or the rearend.

any ideas??

 

Sounds like a broke tranny mount.

 

Agreed. Check your tranny mount and universal joints. I would bet the farm that it is time for a new mount. I would recomend an aftermarket poly unit.

 

thanks guys! ill have to get down there and check tomorrow.

 

A broken mount doesn't always stand out with a tell tale failure. Look for small cracks in the rubber as well as prying on it a bit with a pry bar. if you can move the tranny then chances are it is broken. GM tranny mounts are notoriously weak and prone to failure. I had to replace the mount on my 3rd gen as well as my 4th gen.

 

I've had to change my thirdgen mount abut five times in the past eight years. Last time, I switched to the poly.

 

its most def the tranny mount first weekend i took my car out it snapped doing a burnout and the tranny whacked the tunnel and you could feel it hit hard. all better now with the help of a whole 10 minutes