1964 dodge dart Vibration

This was a common problem in 64 with all cars with a Ball and Trunion, The service bulletin came out in Sept (?).

It is a resident harmonic found in almost all A bodies, each are unique with Tire size, balance, ect. Big cars didn't have it felt because of the full frame, and the steering column was better mounted to the dash board. You can help it by re greasing or changing B&T, but it will come back, you can also grease up the RAG joint, but it will come back.

The only real way is to convert to a U-joint. I have a 64 Barracuda, stock. and a 65 Valiant with a later 904 U-joint no vibes at all in the 65...... my vibe in the 64 is at 25 under acceleration.

Just my 2 cents.....