Quote:
Originally Posted by The Master Cylinder
I always thought "overlap" was the number of degrees the exhaust and intake valve are open at the same time at the end of the exhaust stroke / beginning of the intake stroke.
You're looking at it in the end of the intake stroke / beginning of the compression stroke.
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You are correct. Performance cams have greater overlap, so actually have less power at low speeds but gain power as RPM increases, due to inertia of the air/fuel. Sounds weird, but it works.