Mopar Action SB head article

Iron makes more power if all things remain the same, given that those things are designed around the iron head.
When you design the build around the aluminum head, you get more power, period.

What the hell is "aero space"?

Absolutely and that's why I said all things being equal in my original post.

The title on my degree is Aeronautical and Space Engineering, "Aero Space". It's a specialized mechanical engineering degree. It had a lot of emphasis on aerodynamics and thermodynamics