X head runner cc?

RustyRatRod said

Just askin here so don't explode......but why? The volume of the port is meaningless. It's the shape that counts. The Chevy boys got the port size bragging thing started and they don't even know it means nothing. Those ports are probably the same as any other 340/360 large port small block head.

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Rusty, I would never explode at you, we are buds! I get what your saying but I have disagree. If you have a ton of runner volume on a cylinder that can't ingest the full amount of runner volume potential, then port velocity will be down. My 340 breathes pretty good right now with the factory x heads, but I want to go with a set of aftermarkets that have a better flowing port/runner configuration and for the aluminum. So, i'm trying to match to what I currently have or even slightly larger.