Wow, Denny... that's a gold-mine. Where did you get this?

Question on the ratios listed under different fuel types... these look like static CR's? Although the first part of the article was talking mostly DCR's?

If I'm reading this right, with good squish, alum head and high altitude 10.5:1 is okay (SCR or DCR?) maybe a tad higher on "premium"?

vk: sorry I hijacked your thread! I gotta stop doing that!

Thanks again,

-Chris