Electric fan????

I run a cheap furd taurus 2 speed fan, supposedly 2500cfm on low and 4500 cfm on high. I only have the high speed wired. I did notice a decent bump in high rpm pull. It just seemed that the solid mount fan would hold the engine back once it got past 2500 rpm ( sounded like a jet engine and wouldn't rev past 3800 )
I also run a 14" pusher for the A/C condenser.
The 4 10" fans would probably been a better idea because I ended up having to carve out the back of the shroud webbing to allow room for the water pump nose ... and it is VERY close to the blades...
As for the temp control, I got the mrgasket one from the local autoparts place.
I set it at 190* with a thermometer in the radiator neck and the sensor just behind the fins.
Yesterday in the 95* weather with the A/C on and it never got past the second mark from the left..