In my mind the 200+ From the untouched exhaust port is just not a number I think I’d see on my bench(even the cnc SM only went 188).
But that’s an illustration of why you can’t really compare numbers from different benches.
This is my point of reference for non-cnc’d SM heads:
Went back through my exhaust port tests. Looks like Edelbrock, SM, ProMaxx are all in the 165-175 cfm range on my bench OOTB with no porting. When ported 220-230.