One thing I’ve noticed with hemi heads more than anything else I’ve tested...... on a flow bench that has a “back wall” (like the SF-600), if you don’t turn the head around when you flow the ex ports, the numbers will be noticeably lower.

Most of the stuff I’ve tested, turning the head around does almost nothing.

Also........ the Hemi heads seem to pick up noticeably with a flow tube on the exhaust.

That being said, the ootb numbers for the Ede made MP head, ex facing the wall and no tube is around 185 on my bench, and like in the graphs...... it gets there at a pretty low lift.

With the normal full port, ex port facing out, 2-1/8” flow tube attached, you’re in the 260 range by about .500 lift...... then it just stays there as the lift increases.

The victor with the valve job and bowl blend, also with the ex facing out and flow tube attached is in the 300@.700 lift range.