64 Valiant vibration & noise in drive train

[bearwolf64]

All
I have a vibration and noise that start at 60 MPH and increases with the increase in MPH. It seems to be coming from between the front seats. Any suggestions?

237 (4barrel) new motor mounts
833 Transmission (4 speed) new clutch
Drive shaft new u-joints two months ago.
drive shaft replaced two years ago due to a u-joint failure.

Thanks
Bear

 

[cudamark]

Driveshaft damage or balance, tranny mount, solid exhaust mounts, are 3 things that come to mind.......Did you do some kind of u-joint changeover to the new style? Maybe it wasn't done correctly? If you still have the stock '64 transmission, maybe the output bearing is bad?