Cams choice, Low CR vs VE%

273 said

I agree with you that's my feeling on the subject but there a camp of guys that always argue the opposite and are knowledgeable guys, so trying to see if there is a theoretical reason to why this is the case, We known DCR is important and it's easy to calculate, increase VE% is speculative, hard to measure without a dyno so harder argue it's merits plus don't how a cam is gonna work with a certain combo bit of a guesstimate.

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Keep this in mind, too. When you measure static compression pressure with a compression tester, that's only by the starter's speed turning the engine. When the engine runs, the cylinder pressure is much more, because of combustion.....I am sure you know that. But what most people don't think about is, as the engine's RPM increases, so does the cylinder pressure. As the ignition timing advances, the cylinder pressure rises and the engine makes more power. It's not one dimensional It's a linear curve dictated by several inputs. Timing, camshaft size, induction, exhaust......everything has an effect.