440 piston compresson height question

Bob, I already have the steel shim gaskets in it now..... reading, it looks like 1 point is ~4% increase in HP.... not sure about torque... so, if the 440 is putting out 350hp, it would be a ~14hp increase. If 400 HP, then ~16hp increase... If I do that, I may need to look at swapping out the cam. I have a used purple shaft I got with another 440, but I have no idea what the specs are on it or how to tell if it is OK. None of the lobes look burned or flat...

Thanks guys!