Can you guess my cam?

I had a 508 in the 360 in my 65 Valiant and it sounded pretty similar..

So Rusty back in the day in another post you talked about this cam with a fair amount of knowledge. You said that the vacuum is pretty bad with it. Could that cause an idle inconsistency with my vacuum advance dist? This car is so inconsistent with the idle. It will idle prefect, you rev it up and sometimes it will come back down and sometimes it won't. Could my vacuum or lack of be part of this?