I picked up an electric fan out of a ford Taurus/mercury sable from a junk yard for $20. The Off road groups swear by them as being able to move more than enough air that they rarely have to go to high. Then I have a thermostat from summit on order with the fit between the fins format.
The Taurus fan is a 2 speed fan, usually low will get the job done. I am planning on running the thermostat to the low normally with a manual override switch off of the ignition circuit to give me high if I need it through a relay that will bypass the temperature sensor control circuit. The only time I anticipate needing to go to high though is when I have it bogged down and stuck with a heavy load on the engine and no movement.
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