Pretty sure this has already been covered (haven't read all eight pages, lol) but what kind of fan do you have? I KNOW the fan on my bracket car costs 25 hp. Sure does keep it cool though. If I needed .03, it would be in the trunk, temporarily.
I have a clutch fan. Clutch is a little loose (worn) so I don't know if it's costing me much. I drove it down an hour to the track with the 4.30's and only a 28" tire and no cooling issues. For sure something to consider.
