Probably a Dumb 318 Question

Yes I do understand that I am more just baffled with how much that engine is putting out with such a small bore and our so called "little junker" 318 usually cant get to those numbers without turbo/supercharger or being stroked
It’s a give and take. Let’s take away the Fords plus sides. No roller cam, 2 valves per cylinder, no FI, no computer, 3 spd auto..

Playing field leveled.
Bet ya if they did there would be less flack about building one.
290 hp Poly 318/dualquads….