Run electric fans all the time?

yellow rose said
WTH?? They really said that? I actually called them and I wrote down the pulley diameters for the serpentine system. The crank is 6.4 inches and the water pump is 5.4 inches which is a skosh over 18% overdriven.

Yes.

That one is going to be slightly underdriven but not by much. It runs about 0.92:1

Look at the picture... no way is that WP pulley smaller than their standard 6.4" crank pulley.
Big Block Chrysler Serpentine Conversion, Alternator Only