Thx for all the great info, u guys must not sleep too far from your rides! I've noticed on all your mods every body is running e-fan of some sort. I understand they cut down on rotating mass, but do they cool the same as mechanical? Is the ls1 fans or other OEM's better than the aftermarket? Sorry my replies aren't very fast, I'm working all this on a blackberry!!!!!!! And between my 2 little boys ages 6 and 3, well you guys with kids,you know!!!!!!!