Run electric fans all the time?

Yes.


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


Well WTF??? I’ve told those morons that the WP pulleys are interchangeable. Like I said, I have big block part numbered pulley one either the crank or the water pump.

They should be able to change that ginormous WP pulley for something smaller.