That's sort of what I am trying to figure out. I have done a lot of research, and most say that a cam with more duration is needed, and of course heads that can flow the bigger cubic inches. My interest in the article was that they were also using a bigger spread then I have seen before in duration numbers. Most cams use a a spread of 6, something like 230-236 @.50 for example, where this cam uses a spread of 8. I guess I will have to give Brian a call next week.