I built a killer 440 Chrysler for a guy one time. He complained it was running hotter than it did before, and kept on and on about it. Finally, he called me soon after that and told me he found out why. He said he went to the parts store and his aftermarket electric fan kicked on as he was walking in front of the car and it blew his skirt up....DOH! He didn't realize he mounted it on the wrong side of the radiator.It was a pusher instead of a puller. It happens a lot i'm sure.
