It’s Winter. Let’s discuss strokers. How much faster

MOPAROFFICIAL said

Last 906 head I flowed, as cast went about 227-230cfm.

Best as cast 2.02 J head I ever flowed went 228-230cfm.

Made me think.

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How come it seems a bbm can make 450 hp with stock heads and 340 makes around 400 hp with similar flow from what I’ve seen?

is it port size ??