Vibration dampeners: those are the cocktail shakers right? I have the rears for sure, not 100% sure about front.
Tires are very new. Less than 1 year old. Rims are original but in great shape. I don't know about balance though, I will have the tire balance checked.
The U-joints looked good a few months ago when I gave the car a once-over, but I will add those to my checklist when I get her up on a rack this week. The drive shaft had some odd wear on it now that you are making me think about when I had her up on the rack. The exhaust clamps (not sure about terms: the "U" bolt holding two tubes end-to-end together) ends had worn into the drive shaft a bit. Maybe that caused a balance issue?
The vibration is a suspension/vehicle vibration. The car needs new springs (shocks are good actually lol), but I did not think that would cause vibrations, just cause the car to "float" and ride low.
The steering wheel is steady and has no vibration. Actually, I would say the vibration is coming from the rear of the vehicle if anything, not the front or steering.
I feel it most when cruising. Maneuvering, changing lanes, turns do not have an effect.
No particular gear seems to matter much at all. if I am doing 45 in 4th gear or 5th it is the same.
This car has been the strangest experience for me. The body looked great. Good paint job, nice trim, nice interior. However, whoever had this car before me did NO upkeep. Every wearable part is worn out.
The Bird Man, My Bird: 1969 T/A convertible tribute, 455 w/TREMEC 5-speed. Moder, not a purist... but I love that classic T/A look!