[HSSS427]

I did not CC the heads and am using the numbers from the Shelby web site. Seems that could have a big impact. Is there a way to CC the heads or measure them while they're on the car?

Found some interesting theory on cams, heads, etc in David Vizard's book How to Build More Horsepower Vol 1. He's listed several "rules" in his book in the section on heads and porting and polishing. Just now moving to the cam section. He has some interesting discussion on compression ratio as well that makes me feel better about being at only 9.5:1.

However, still thinking I need to get to 10:1 compression by milling the heads and get a cam that increases the intake lift to something more like .560 instead of my current .525. However, he says that the flow on the ports should match the flow into the head, so no use lifting the valve higher to increase the flow if the port doesn't support that volume.

One other thing in the book that seemed to make sense, but I haven't seen much about is coating the chambers, valve bottoms and piston tops with material that keeps heat loss down. Basically keep the heat in the chamber instead of going into the heads and cylinder. Any experience out there with this?

BTW - Excalibur, love your blog. I'm keeping up with your commentary so keep it going!