Originally Posted by
Barry_GTi
I have seen first hand and heard many times over of heads that show good "flow" results but don't make any better power.
Thats because they do not know how to use their flow bench or how to interperet the data.
I could achieve great flow from a port by simply making it larger. What you should really be looking at to compare heads is coeffecient discharge for a given cross sectional area or perhaps something like cfm per mm square valve area.