Electric Fans
Electric Fans
Senior User
Joined: Jan 2002
Posts: 377
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i took a complete set (16" and a 13") of a caddy v8 car. they draw about 40 amps to start then not as much once they are moving but only time they come on is if i am at an idle for along while. But i also wired them manually so i could turn them off when i go play in water but if i turn them on manually it will keep the temp down to 150 even when working hard
Posting Guru
Joined: Nov 2003
Posts: 1,006
Likes: 4
From: Sussex County, DE
While I love my 300 and think it's a great engine, I can hardly say the same for the clutch fan assembly. I had problems with several, and finally replaced it with a dual electric setup from a wrecked Buick Riviera with the Supercharged 3800 V6. I wired it up with dual temperature senders (Hayes makes decent ones with relay control), and set one to come on at 205 degrees, the other at 215 degrees, and both are set to run whenever the A/C is on. Guess what? The engine warms up fast (I do use a 195 degree thermostat) but then runs cool, never gets hot enough to turn on the 215 degree fan (even when I was towing 6,200 lbs on a 95 degree day). And the A/C is killer. The extra low speed airflow makes the heat exchange much more efficient. This is also responsible for a nearly 3 MPG improvement on the highway, and the fans rarely come on in the winter at all. I know that you wer looking for early 80's but the idea is the same. Same body style even.
Senior User
Joined: Oct 2004
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I put a fan off some old car, dont know, bought it on ebay, 40 AMP draw on high (2 speed), but it pulls 4000 CFM on high, i got a switch wired to the high mode, have the low mode wrapped around the handle of the battery cuz i cant find time to wire it. I drag race the truck, dont know why, so i have them both on switches. I notice a little power difference with the fans in the off position, most noticeable the engines willingness to rev a little farther( same effect i recieved with my homade intake) and faster. If its cold, say <40, i can keep the engine pegged at idle. And no matter the temperature so far (only been able to test since the first week of november here in alabama), the motor will not get into the normal letters if its on and idleing. I revved the engine to 2000 or 2500 RPMs, and let the temp get to basically straight up, mid of normal, flipped the switch, and even while maintaining rev, it cut the temp down out of normal. I love the fan.
Postmaster
Joined: Jun 2003
Posts: 2,656
Likes: 5
From: shepherd
jwtayler has one on a 95 i believe and it looks great, i am about to do it on an 81 f100 to gain mpg if i can.
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Senior User
Joined: Jan 2002
Posts: 377
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not really much gain, only on the high end which is if you travel the highway alot. I am more happy will low speed cooling, like when i plow or go wheelin.
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Senior User
Joined: Feb 2004
Posts: 219
Likes: 0
From: Chicago
I was looking to get the fans but worry about the eletctrical draw i allready have a amp pulling a lot of juice. I got a good battary will that be good or do you need a HO Altantor.
Also what year cars are good sources for the fans?
Also what year cars are good sources for the fans?
Posting Guru
Joined: Nov 2003
Posts: 1,006
Likes: 4
From: Sussex County, DE
Depends on how often you hit your amp for big power. If you use it for clear sound at reasonable volumes, ou have nothing to worry about. If you are always rattling windows from 3 blocks away, then yeah, you'll need an HO alternator. Keep in mind, the battery is just a big electrical storage tank. If you pull out of the battery faster than the Alternator can put it back, then you will have problems. Keep in mind too, that with a temerature control, the fans don't run all the time, unless the A/C is on. As for years and car types, just make a measurement of your Radiator and go to the boneyard. I prefer GM fans (spare me the hatemail) because they move alot of air with relatively low amp draw. I am using a dual fan setup from a Buick Riviera with an Supercharged 3800 V6. Any dual fan setup that is roughly the same area as your Radiator should have no trouble keeping things cool.
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