quote:knocking down sharp edges, steps, and ridges and blending the various surfaces and contours. All while removing as little material as possible.
This is where I will be spending my time. Thanks for the advice. "Less is more" I get that.
What about the hump on the roof of the exhaust port? In a Mustang with headers does this help direct flow downward or should it be eliminated regardless of application?
Should the material around the intake valve guide be teardrop shaped to help direct flow away from the cylinder wall, eliminated completely or left alone. Seems to me leaving some cast iron around the valve guide helps dissipate heat from the intake vale. I'll not do much here as the Ford Engineers had things figured out.