I might have gone with a more conventional clutch fan, except that there isn't enough radiator core clearance even with the shortest clutch I could find. Since the engine is in the stock position, the radiator core position must be the problem. Another reason it might be time to try a properly sized aluminum one.
The issue with a mechanical fan isn't so much the (alleged) hp loss at high rpm, but that it makes the least cfm when stopped or crawling at idle - which is often when you need it the most, in traffic on a hot day. No problem with the Contour fans which move a lot of air.
Anyhow, as you, I and others have said, I can try it and see ;)
