I’m not following you? I haven’t even gotten my heads yet to know the flow numbers on them. My cam is supposed to make power past 6,200 and rev near 7,000.
Maybe I miss read , I thought you were looking to use stock magnums or EQ's. Cams only allow a percentage of air flow of what your heads are able to flow, same cam with different heads can very the powerband greatly. To make peak power above 6000 rpm you would something like W2 or similar.