Quote: A flow bench is just a tool,unless everbody has there heads flowed on the same bench by the same guy there will different numbers. We have seen flow sheets that came with fully ported B-1 heads,reworked buy another B-1 shop with a flow sheet with higher numbers and we flow tested them and get lower numbers. The dyno and ET slip will answer whos are better.
This is soooo true! I see guys really overdoing the exhaust ports of cylinder heads. I can tell you that my ex. ports you see here are not much larger than OOTB shape. It's the chamber/valvejob/bowl shape a.k.a. the bell curve that is mostly responsible for exhaust flow.
Great big ex. ports have their place, but you'd be surprised how much they can hurt most engines...
