Ported Edelbrock versus W2 out of the box !

What if the shape of the curve is similar but one set of numbers is 10-20cfm higher?

You can dismiss it as a different bench......but maybe there really is that much difference in flow(or more).

When the numbers come off the same bench........ you know.

When they don’t...... it’s just speculation.

The other thing is, not all benches operate the same way, which can also influence the shape of the curve.