Highest flowing sbm heads?

pittsburghracer said

A flowbench tells you way more than flow if you know how to use it and what to check. Perfect example would be the doctor J head witch I have had on my bench. And the first Bloomer head which I didn’t have on my bench. Port cc is important but you can’t just get in there and remove area wherever you choose.

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I agree. If I gave the impression that flow benches aren't useful that wasn't my intention. I have heard Darrin Morgan say that flow benches will lie to you. I also heard Jon Kaase say he doesn't use a flowbench much anymore. I also heard Warren Johnson say he has never seen a flow bench that was built properly yet. I don't see these comments as meaning flow benches are not useful. I can't speak for any of these guys (that's an understatement) but I think that they have learned some of what they know from years spent on a flowbench, dyno and at the race track. Even if the flowbenh tells you that a gain has been made in flow by changing a port in an area but the dyno and racetrack tell you it's worse that to me is useful information and may give you a better understanding of how a port works. My opinion is that flow benches have been a net gain in the industry as a whole.