Thought you guys might be interested in seeing a before and after. The LT-5 used in these graphs started out with porting of intake area, then cylinder heads and added larger intake cams. Then the complimentary exhaust cams followed.
S the following graph shows the Intake cam only config v Intake + Exhaust. Each config shown has been tuned so u see the best results of both. BTW, N/A motor, stock block 5.7L.