BORE SHROUDING TEST: 4.03" vs 3.91" Edelbrock RPM Heads Really Fit a 318? Project Mission Impossible

Always a good topic of discussion with cylinder heads. What makes more power if you could only have 1 of the following? Compression? (closed chambers), larger valves, or larger ports?
Depends on exactly how much cr vs how much overall airflow gain (VE%), Airflow generally has way more potential.