How can i make 700 horse from a 410 stroker

bigfoot said
You are in a very, very small group of people to achieve that out a factory type head if thats the case. What would a set of your heads go for?

I wouldn’t sell a set right now. The set on my car that I did for a friend 12 years ago maxed out at 318 cfm with the intake on. It needed the intake to control (slow down) the air. In the last year I’ve found and fixed that problem and these heads that I’m slowly doing now flow right at 330. Every bit of that pickup is 3/4-1 inch from the valve.