CNC porting is still misunderstood,and not all CNC porting is created equal.
Imo it should be part of the process not "the process"
A good porting program combined with hand finishing and testing" airflow/volumes,velocity "is the best way to create consistent quality heads
Can you provide the same quality and consistancy doing them by hand?
Sure.....but not many can.....in fact very few can
People might be surprised at how far off hand ported heads can be.
Was suggested that CNC ported heads should be cheaper
Somewhat true if all you are doing is just CNC work.....surface and assemble
What should cost the same or more is the handwork that goes into finishing them