Balanced Crankshaft (Need Help !!!)

(Moper) I don't know, if it vibrates enough my wife might be more apt to ride in the car. If you catch my drift.

(340Mopar) You are right about the mallory metal being expensive. He said that if he would have had to add weights it would have been $50 per weight.

I looked up the number online and it is a '73 340 cast crank. I'm guessing somewhere in the life of the engine someone switched the crank to internally balanced. Now I just wish I had not bought the counter weighted flexplate.

Thanks for the help guys.