Don't be babbling at me with your poly angle stuff. I'm not the nut that named it semi hemi.
Some nut at Ford did!
Oh, btw, the last engine dyno I saw on a Boss 302. 1970 heads dropped compression from 11.5:1 to 8.5:1 to run on 87oct crap, stock cam, stock intake and carb.
369hp 340lb/ft.
Doesn't sound like 290 to me!