I like Uncle Tony...however, he does get too long winded in his videos. Cut the babble and go right into the topic would be my suggestion. That said, he is correct. He mentions the good 'ol ignorant street squirrel's "Your gonna flood the engine with gas!" on large or dual car'b applications. Vacuum determines the 'flow' of air on a carburetor's output. You can install a Holley Dominator on a stock small block engine. It will run...however, the throttle response/velocity/drivability will be horrible.