Manifold OR Ported Vacuum Advance?? There is a case to be made and I side with David Vizard!
21:08
Ported vs. Manifold Vaccum Advance! | Were To Hook It Up And Why | How Are They Different?
23:41
THE TRUTH About Vacuum Advance- What is it and WHY do you need it?? Ignition Timing 101
23:56
How To Choose Between Timed or Manifold Vacuum
18:18
Compression Myths - How much compression can you run on pump gas? Questions Answered
12:57
Ported or Manifold vacuum?
35:32
Understanding Engine Vacuum and MAP - What is Vacuum? Why engines have vacuum & why it's important
21:20
The Ultimate Vacuum Advance Video Part 1
11:46