Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec SHOshop 3.0 starting 12/9..

If they machined them out to the gasket, then they did almost exactly what I did. I did notice that the 3L valves have larger depressions in them and the increase in radius from the 2.5 to 3L gasket is around 3mm, so you should still be a little higher than me, but not much. I'm guessin that the 10.5:1 is high, 10.3:1 low. Sounds like bullsh*t hunh? me just quoting compression guesses from the top of my head. Well just remember that I described my cc'ing method on my webpage and I was pretty well satisfied with the results. Based on what I learned of both heads is why I am making the rough estimate of that static compression range. Still, you'll be in great territory for the Vortech, and yes I think they have finally fixed the kit right.
Never quit the quest! (I always say.)

warmonger