Thanks a lot Jack, and everyone else. I have replaced my fan clutch, and water pump, HUGE OEM 460 radiator, all hoses, thermostat, etc. All of that is good and I'm not looking to replace the mechanical fan. I repeat, NOT replacing the mechanical fan. I just want to add a cheap electric one I can control to push some more air through the aux tranny cooler, condenser and radiator. So I need pushing fan on the front side, meaning I may have to go with an aftermarket reversible. Not sure yet. It looks like there is lots of room on the Ford vans between the grill and radiator.
My mechanical fan is working properly, by the way. I hear it lock on full tilt occasionally. I'm simply wanting to maximize cooling in a vehicle with a huge engine stuffed in to a tight space, and keep everything else cooler as well, especially at low speeds. My 460 gets pretty damn hot, and these motors suffer from lots of the effects of heat since they are older technology. My starter is starting to go at just 40k miles, which is one of the problems with 460s from heat. It drags when hot so I just bought a spare to carry. Also, exhaust manifolds tend to overheat and crack on these motors. Also, vapor lock issues that I may or may not have had with all my trouble on my last trip. I think vents may be a better first option than the fan, but I figured a fan would be maybe $10 at a salvage yard so I was thinking of a cheap experiment. I know the diesel guys also have a lot of trouble keeping their vans cool and I am hoping to figure out something that works for others too.
Things I'm thinking of:
electric fan in FRONT of radiator, on a switch
mechanical fan still in place
thermal wrap from manifolds to cat
possibly thermal wrap the starter itself. Could it hurt?
thermal wrap fuel lines. I already did this in a parking lot on my trip, but I plan to do a more thorough job of it soon to make sure they aren't going to vapor lock
high flow catalytic converter
A real temperature guage on my pillar pod, I already have tranny temp and never have gone above about 210.