[68 P.O.S.]

Originally Posted by ncpetersc

Just found this article online (2nd post in the thread), very interesting read. It's got me believing that there is no good reason at all that it shouldn't be on manifold vacuum.

That's a good read. Here's the magazine article that engineer, John Hinkley, did as well. Basically the same thing as your link. Also, here's the vacuum advance follow-up to it. All fantastic info

http://www.camaros.org/pdf/timing101.pdf
http://www.stl-vettes.com/65Vette/co...ng_Advance.pdf