Cams choice, Low CR vs VE%

RustyRatRod said
Don't tell me what I ignore, because you don't know. An engine IS indeed an air pump, but a self driven one. Every air pump has to have a power source. An internal combustion engine just happens to create its own power.

But directed at @273, your question "as presented" is unanswerable. Though the forum gurus make think they can, they effectively cannot and neither can anyone else in the question's present form. For an answer, you "must" provide a basis of comparison. In other words "Does engine A have more VE% than engine B?" "If so why?" This is a comparison question and as such needs a basis for a comparison.

It's like all these stupid commercials on TV saying "You'll lose 40% more weight". Oh yeah? 40% more weight "THAN WHAT", yet people flock to them never realizing they just got took by the oldest trick in the book.

And the “self propelled” function is what we are considering.

The efficient use of fuel is way too often overlooked.

That’s how u can have two 500 HP engines (identical as they can be) off the same dyno and one is quicker than the other.

Every single time, the more efficient engine is quicker.

One of the many things the stroker engine has done is dumb down the public as to what’s important when putting something together. No consideration of the induction system and the exhaust is by far the most common. That means the cam is usually bigger than it needs to be. And bottom end suffers.

The HP and torque curves are backward because the exhaust limits RPM power production.

There is much more to the air pump than just making it bigger.