That fans blade is designed to suck. I removed the clutch fan from a friends 2.8 s10. I installed a thermal switch behind the radiator to run the fan. It did not work very well. It either overheated or ran too often. For an E fan system to work properly you need to run the fan using a water temp sensor installed on the intake. Something like this should work.
http://store.summitracing.com/partde...5&autoview=sku
You could probably source your parts off of a cavalier or sunfire, considering they have the same engine & a factory efan.