My thoughts too on those intakes.
Thanks for that - sort of guessed/knew that [without the figures and the intercooling logic]
Wasn't really what I was getting at with my question regarding gas speed though , I think I am still a bit stuck in the age of carburetors and tuning [regarding gas speed and good mixture homogenisation]
Looking again at the 2AR head , the intake ports Are humungus [ good technical term ! ] but I'm guessing the injector position spraying into the venturi area just before the valves and modern injection design combined with fuel pressure delivery , has moved the whole 'NA intake gas speed' into a new ball park - [all completely beyond my experience or practical application]
Though as an engine destroked a little I reckon it would be half decent for a speedway midget.
Though these days probably too expensive to develop. The big single cam engines probably have that market cornered. From memory there is about a 15% penalty for multi cam.
Cosworths were quite big a decade ago but all the specialists engines seem to have them beat now.