I recently picked up a 72 Dart 4 door with a 225 /6, 50k original miles, with a 904 and 8 3/4 rear, all stock. I've recently replaced the Holley 1bbl with a professionally rebuilt one, and got a Pertronix upgrade on a new distributor. It has new plugs, plug wires, high output cool, and an oil change. The car runs far better than it did when I got it, but it still held onto this annoying vibration once it gets warmed up. When I start it up in the mornings, it runs fine, and with no vibration. However, after it warms up on the way to work, it still runs fine, but has this annoying vibration that rocks the whole car! The only other things I notice about the engine in general are that there's a faint ticking that is always there and increases with RPM, but not in volume. I also hear a little clatter when it's under load. My check list includes everything from a compression test, EGR valve, PCV valve, timing, and emissions control system all the way to the power brake booster causing a vacuum leak. Does my description lend itself to creating any type of order to which I should organize my list, or do any of them seem more likely than the others? I have attached a link to a video of the motor after it warms up.
