<span style="font-style: italic">"With all due repect to those of you out there that have spoken to Smokey himself and that are more knowledgeable than me.I respectfully disagree on two points.
First, I just looked at my heads here and they sure look like a hemi head to me....what is actually the difference in a hemi head or a semi-hemi head anyway??? the chambers are completely round and the spark plug hole is in the center of the valves and close to the center of the chamber. Maybe they are not as deep a chamber as a chrysler hemi head??? </span>
<span style="font-style: italic">
Second,....I am getting ready to build my motor to put in my 67 Z and I am planning on seeing if I can get 600 plus horses out of my heads !!</span>
My turn: With all due respect to you, you're wrong regarding those heads being "hemis" and when that small block hits the dyno, I think you might be a little surprised. Here is something you might want to uh, ponder:
Author? Smokey Yunick and Larry Schreib; 1983
What you're looking at is a classic open chamber, canted valve head. It is sure no hemi.
Wayne