Great day for porting

roccodart440 said

I know it's not a SB head, but IIRC it was something like 292cfm OOTB and 345 after the porting and valve diameter change.

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If they were flowing 292 out of the box this gentleman’s flowbench needs calibration. They don’t flow that well out of the box. This is why I check calibration on every head I flow.