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expavr · 02-10-2016, 12:21 AM

For a frame of reference I have a 15 " Flexalite Black Magic 3500 CFM puller fan on a 550 HP hemi powered street rod. Its thermostatically controlled, set to come on at 185* and draws 18 amps when running. There's never been a time even in stop and go traffic that the temp gauge has gone past 195*. If you can fit it in I would recommend the use of a puller fan with a shroud rather than a pusher. Depending on the capacity of your radiator and the flow rate of the water pumps I would think that a 12" Flexalite rated at 1500 CFM or something equivalent would be adequate for your needs. As I recall you will need at least 4 1/2" of clearance from the back of the radiator to the front of the engine to fit this setup in. Full disclosure: I'm also running a 50 GPM Meziere electric water pump which moves the water at that rate independent of engine RPM.

02-10-2016, 12:21 AM	#7
expavr Senior Member Join Date: May 2010 Location: Hansville, WA Posts: 776	Re: Electric Cooling Fan For a frame of reference I have a 15 " Flexalite Black Magic 3500 CFM puller fan on a 550 HP hemi powered street rod. Its thermostatically controlled, set to come on at 185* and draws 18 amps when running. There's never been a time even in stop and go traffic that the temp gauge has gone past 195*. If you can fit it in I would recommend the use of a puller fan with a shroud rather than a pusher. Depending on the capacity of your radiator and the flow rate of the water pumps I would think that a 12" Flexalite rated at 1500 CFM or something equivalent would be adequate for your needs. As I recall you will need at least 4 1/2" of clearance from the back of the radiator to the front of the engine to fit this setup in. Full disclosure: I'm also running a 50 GPM Meziere electric water pump which moves the water at that rate independent of engine RPM.