Never realized, wow, these things flow like crazy right out of the box! I don't have flow numbers like that on my stage II cathedral port heads!!

The Eagle head arrived in 2009 with VVT on non-SRT Dodge passenger cars and trucks. As with the early head, the Eagle uses rocker shafts and 1.65:1 ratio rockers, but there are big differences in the size and shape of the intake port and the rest of the valvetrain. The Eagle uses 2.05-inch intake and 1.55-inch exhaust valves that are not only larger, they are also longer than standard. The rocker support is taller, and the valve-guide support boss sits higher on the top side of the head, moving it out of the intake port. The Eagle uses a larger square port like the 6.1L that flows a massive 331 cfm right out of the box. The D-shaped 60cc exhaust port on the 5.7L Eagle head flows 181 cfm at 0.600 lift. The 5.7L Eagle head uses a closed 65cc combustion chamber.


Lift Intake/Exhaust CFM
0.100 82 45
0.200 175 110
0.300 243 160
0.400 300 180
0.500 323 181
0.600 331 183
0.650 331 186

*Flow testing performed by Dave Weber at Modern Muscle Performance using a 4.060 bore plate, no exhaust flow pipe on a Superflow 1020 flow bench at 28 inches test depression.