I have a friend who is just putting the finishing touches on 1987 .
He is having a terrible time with vibrations, 5.0 eng / C-4 trans , sitting still.
The engine runs perfect without the torque converter, (third one).
Attach the torque converter and will shake your teeth.
Any ideas?? I will gather more info and post it but I thot
someone may have experienced this before.
Pix are of my two 1961 Olds, I am too old to start a Mustang project
so I enjoy my friends who have them.