Quote:
Originally posted by bash555
but as far as losing perf by using a carb on a old FI cam, what, specifically is the problem?
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The problem isn't that the carb'ed performance is less than the FI'd performance (when everything is "right", I don't think the differences are large enough to notice). The problem is that there is so much more that can be done if you use a more radical cam grind.
The timing of the opening and closing events, and most especially the overlap where both exhaust and intake valves are open at the same time. Those are the biggest problems that stock FI has with aggressive cams. But those are the kinds of things that help an engine breathe better, particularly at higher RPMs and flow rates.
--DD