I think I found my vibration problem

Killer6 said
Harmonic imbalances are vibrations. I think the problem
here is you are multi-posting this project,and losing track
of what you've shared where, when, & with who.
Many older mopars have been found to be oz. out of
balance,not grams,and mixing non-OE pistons in could
very well have made it worse.You can get your rotating
assy. balanced as is w/o trying to internally balance it, as
long as you don't plan on rod/piston changes etc., you're
set for the duration.

as it stands right now, I don't intend of balancing anything. I had planned on having the engine rebuilt over the winter because the vibration I had was thought to have been on the internal engine. I didn't think so. I have always maintained that I had 2 problems at the same time. I have a quiver in the engine while sitting still. that is probably the imbalance of the internals. But I have always said that the vibration that was a grind type of vibration was somewhere in the driveline. I spent 2.5 million miles in a semi and I know what a vibration in the driveline feels like. As it turns out the pinion angle and driveshaft angle was off. I took this car to a reputable spring shop and told them I had a vibration in the driveline and to check the pinion angle. They did. BUT, they didn't check the tail shaft because I didn't tell them too. They set the pinion at 3* down. what they didn't know and I didn't know was that the tail shaft was at 5* down also. so I am assuming that when I left the spring shop that the problem couldn't be in the drive line so it must be somewhere else. that is what happens when you don't know a lot about old cars. I am learning. So as of now, I no longer have a vibration grind in the driveline like I had before. I still have a very slight almost un notable one that I think is probably a u joint from running this car as it was. I am going to have the driveshaft checked next week and new joints put in and go from there. The little quiver in the engine sitting still is not enough to warrant me having this engine rebuilt and spending a couple of thousand dollars.