Horsepower limit for out of the box Edelbrock RPM heads

pittsburghracer said
I spend at least an hour every year at the Halloween Classic Race fingering their ports. They laugh when they see me coming. And food for thought I’ve seen a lot of racers turning a 300 cfm head into a 400 horsepower disaster. Have a great weekend

Best quote on the topic I read once was something like;

“The best way to kill a great head is with a crappy intake.”