Technical Can Someone Help Me Diagnose Engine Trouble With Vacuum Gauge???

Hi All,
Are there any good engine guys out there who can help me diagnose an rough running engine???

Here is a video of the vacuum gauge with the engine running at various engine speeds:



The engine is a 1949 Packard Straight Eight and it was just rebuilt. I just adjusted the valves hot and replaced the spark plugs. All cylinders were compression tested and all are within 107 and 118 PSI during a hot compression test (spark plugs out and 5 compression strokes).

Can anyone PLEASE offer some suggestions/advice???

THANKS IN ADVANCE!!!

Bill

 

link at Post 47

http://www.jalopyjournal.com/forum/threads/so-what-is-a-shoebox.157182/page-2#post-11109581

 

check the timing with another light and the factory marks the dial adjust on a lot of lights are off