Magnum 5.9L vibration

mopar65 said

First would like to say sorry for all the problems you are having. I have never heard or have had a converter not fill up all the way. Making it out of balance. Make sure your converter bolts are tighting all the way. They maybe to long or your converter lug threads not deep enough and the bolts are bottoming out before they are tight. Also make sure your front pump bushing is not worn out
But to me if it was worn out enough to make it vibrate that bad. That your pump seal woukd be leaking

Click to expand...

thanks! Several facts:
1. Plugs working, all. checked.
2. Distributor new, the cap is ok.
3. Flexplate change, from non balanced (no counterweight) for Magnum to 10236, 10237, Magnum balanced by hughes engine does not affect much the vibration, it's heavy, the doors maps (panels) are shaking on low and 1500-2000 rpm.
4. Transmission, torque converters are new

what else? I started to think to swap my torque converter and flexplate to the smaller bolt circle torque converter to install the stock flex plate (10 inch).