I have also flowed stock Ram Air V heads on my flow bench. The head I flowed did not go 320 CFM, but not far off either. I think the best port was 309 CFM. This head was absolutely stock, factory valve job and valves. But what what really amazed me about the V head and what gave me so much confidence for our billet V project was the behavior of the head on the bench. The Ram Air V head never backs up on the flow bench. You give it more lift and it just flows more air. Never gets noisy and turbulent, never stalls, right up to the point the retainer hits the valve guide. I have never had any stock head on the bench that behaved like this. If the factory would have utilized this fact and used a big cam and associated valve train, it would have been a game changer. But that stuff greatly increases cost, which is always a factor in factory parts.
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