This is what I remember. I think Rod told me that on his bench they flowed 296 cfm at. .600 lift. But people tell me that flow isn't everything. People have had those brodex moved center heads that have flowed in the 340's cfm wise. But the engine didn't make much more than 600 hp. I've see w7 engines that flowed about the same thing make right at 800 hp. But I know for sure how much power Rod's heads make. And I don't know any other conventional head that you can buy that can make 680 hp.
