From the looks of it, Ford had to make tough decisions in the Coyote combustion chamber but built a well-balanced design. It's is a little deep and the valves sunk a tad more than expected, but these are to separate the valves and pistons for increased TiVCT action. Ditto the slightly shrouded 37x31mm valve package; despite its crowded looks and compact exhaust valve the head flows like gangbusters, and still makes 11:1 compression with a flat top piston, and has variable cam timing to boot. This chamber is about airflow, with light quench area and no swirl or tumble. The small round pad between the exhaust valves is a locating pad used at the factory.