I missed the @.500 I guess. Sorry. I also may have misjudged the goal of the post which I saw as discussing the use of airflow numbers in arriving at a post dyno conclusion about efficiency of the entire package. I don’t look at overall flow numbers as more than an indicator of performance. Because the bench is only the closest thing we have to a running engine- not a running engine with which to gage improvements vs changes. The reason certain heads just work is because they work within designed in parameters. A vortex heads works well, until your out of its comfort zone. Same with a magnum port design like the EQ heads. And the guys making bigger numbers with them are aligning the other parts to exploit their main feature- which is air speed.
My opinion, if you really want to gage a head to see if it works- look at the horsepower number and bsfc and dyno it as it will be in the car. Otherwise put it in a car and run it. Otherwise we’re all just spitballing.
Or is spitballing the intent here?
