1999 454 carb swap. best street carb, 600? 650? 750? CFM

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SquareRoot

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I'm not arguing, but can you explain this further?
A carb mixes air and fuel as it enters the manifold. When that mass of air hits the bottom of the manifold it has to turn 90 degrees and make its way thru the runners until it compresses against the back of the intake valve until it opens. Every change in direction makes the air/fuel mixture want to separate. EFI doesn't mix the two until it's ready to enter the combustion chamber. That's a dry manifold. To your point, dry air is lighter and responds faster than heavy air. That directly relates to throttle response. It's similar to sucking water through a straw versus a milkshake. Viscosity. A lot of people mistake that faster response as more hp. An EFI doesn't make more power than a carb, it just feels like it.
 

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