Bobby
2 12” fan won’t get you to the 4100 cfm numbers your looking for. A single 16” if mounted in the center of the radiator will hit the water pump pulley and at the most a single 16” will give you 3500 cfm. With your trans cooler and a/c fan you won’t have enough room for a pusher fan in front of the radiator either. Another thing you have to consider is with a shroud you only you only have 4“ between the fan shroud and pulley surfaces (depending on how thick your radiator is). So you have to get slim fans. To optimize you electric fans you need a shroud. without a shroud you will have to run those plastic ties that go through your radiator.I recommend dual 16” fans mounted to the shroud.these fans are $99 each and would give you 3000 cfm per fan and are 3 1/4 thick. The next lowest cfm 16” fan is 2800 cfm but is 3.5” thick. I don’t think you will need a higher amp alternator because they only draw between 8 and 10 amps per fan. If they do cause your electrics to flicker you can always upgrade that later. But make sure you get a thermostatic adjustable on temperature off temperature fan controller with relays. I ran a Dakota digital fan controller with a bypass switch. It’s Bluetooth programmable, can hook up to most temperature senders, but it needs a second 70amp relay and has to be programmed to change some of the settings.
I would get:
2 16” 3000 cfm electric fans
1 dual champion 16” fan (34” shroud)
1 thermostatic dual fan controller with relays
1 bypass toggle for emergencies
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