Terry Brighton has done quite a few on his channel. and shows dynos, usually mid 500s without too crazy of a cam. I was just more wondering bout how critical port flow is below X rpm.. bored at work and all :)
It’s an hard question to answer too many variables, it’s more about port size and shape than flow, plus VE% has a lot to do with it a 408 at 100% vs 120% ve is basically a 408 vs 489.