318 Idle Questions

If you have a standard fan you can usually turn the engine with it by pressing on the belt at the same time to get it to grab the pully better.

Nice! I'll give that a try.

There is a vacuum leak that I've located on the manifold.

So far what you are seeing on the timing light sounds pretty normal.

There are some things that are concerning me about what I'm seeing with the timing light, one of which being that the light "misses" occasionally.