Cylinder head milling

EL5DEMON340 said

Nope, this is what I have heard from guys going really fast with stock parts .

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The truth is in the .065-.100 range is where there are issues. You either want quench to be .040-.055 or get it over .100, and that is NA.

Tight quench speeds up the burn rate. Which is what you want NA.

Power adder stuff wants less quench (actually no quench) to slow down the burn rate. Power adder stuff loves that.

So what you said may be correct for power adder stuff but not for NA.