Camshafts: What effect does increased lift have on performance?

I haven't read the 4 pages worth of replies, but if you're thinking you'll gain a bunch of performance from increasing the lift, aka: like going from a 1.5 to a 1.6 ratio like a lot of guys do thinking they'll gain 30 HP it's not going to happen. Duration has far more to do with increased performance than .050" -.100" extra lift. Hanging the valve open longer is where you'll get more substantial power gains.

Tom