Ported Edelbrock Victor flow numbers

PRH said

4.375 is what I almost always use for BBM, unless the engine will have a noticeably bigger bore.
I tested a CNC345 on a 4.375 and a 4.500 bore...... zero difference in intake flow at any lift up to .800(as high as I went).
The exhaust picked up just a couple, way up at the very top.

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Of course that's why I made my adapter 4.375" because its very rare that I am playing with a 4.500" bore Megablock or some other big bore Mopar. I have also seen almost ZERO difference in flow testing from small bores up to big bores--in fact I have seen slight flow losses when going from small to big because the air can't "hug" the bore wall and be directed. J.Rob