I had not one but two bad u joints causing the vibration. I also had my carb out of adjustment and could not tell because of the vibration when driving.
Ok looking for some help. I have just installed a 318 back into my 1972 Dart. All seemed well until the first test drive after the install. The Dart has a horrible vidration while accelerating which is slightly better while at a steady speed and goes away when not on the gas at all. Now for some...
Idk where you are located but Warner Spring in Indianapolis would have or be able to make any spring set you would want, from factory to whatever you want.