Edelbrock carb adjustment

So how much of what Shrinker says adapts to big Venturi, big throttle blade carbs?
I remember him saying a properly set up 750 would make 650 HP on a 420 cube engine. I would imagine he would say use 2 carbies as he ran 2 on his own race engine that was making 903 Hp from 412 cubes with 365 cfm.