Going on my EcoBoost Dailey Driver. The head from the factory is pretty plugged up. Factory flow numbers below
Intake, Exh 1 and 4, Exh 2 and 3
0.05 35 28 25
0.10 72 62 60
0.15 111 100 88
0.20 137 125 110
0.30 152 140 118
0.40 156 145 123
0.50 156 147 124
Flows are averaged, with ports 1 and 4 sep. from 2 and 3 due to the lack of flow from the outter cylinders.
Also installing Ford Racing cams at the same time. they are a step up but still very mild @ 203 @ 50 0.301 lift Exh and 207 @ 50 .353 lift