An electric fan is what you use when the stock one isn't cuttin it. I have three on my sbc s. They all run kooler.i don't care what they tell you they won't let you down like a stock fan, that speeds up-----then down .up then down . Having the same amount of air at all times fixes heating woes.My stock LT-1 motor came with one so it has one as well, never been a problem. When building a hot rod whatever!! . these components should be thought out carefully.. as over heating in a street rod, is not an uncommon occurence, just because someone picks up a fan and sez "there this oughta do it" doesn't mean it will do the job..I've seen this more times than i can count. If the new car manufacturers use them on their cars [most all] they have to be right ..right JMO