This article clears up so many questions on this subject in a easy to understand way. The way this gentleman described it, I could actually picture the air/fuel mixture and the spark plug igniting it in my mind! Thank you for sharing this article. Full manifold vacuam for me from now on!
As an aside, I will be very curious as to how many people on the board are going to post views that refute what this ex-GM engineer has to say!