340 Engine Shake

UPDATE:

I lost the cam, it appears. There is shiny glitter in the oil and in the oil filter after he cut it open. So the motor has to come out and gone through. Super disappointed.
Bummer!
Please remind us of your break in proceedure and the engine oil that you used.
When you began disassembly go at it like a Surgeon pay attention to the smallest of details, measure as much as you can, use your camera and record everything. Post what you find
Most important of all is to Keep your Chin up even the pros have camms fail.