Force4

Well i am deciding to upgrade to an electric fan and I am just curious how many amps does the 5.0 electric fan draw? Will i actually gain anything out of this, I am worried because my motor runs cool and never gets warm as it is I guess the main reason i would be doing this is to gain power but would the gain really be worth it?

67mustang302

You probably won't gain that much power, but it's still a good idea. Power draw depends on the fan, I'm running a Universal Jegs e-fan, and it runs on 18.9 amps, but they can spike over 30A at startup. The thing with an e-fan though, is it only runs when you need it, which is at low speeds or sitting at idle, otherwise it's basically off most of the time. The advantage of that is no power consumption driving down the highway, so it helps with mileage, and the power gain you get for performance will really only be noticeable if you're upgrading from a crappy mechanical fan to begin with.

89musclestang

ive read in a mustang mag that it frees up 20 horses but i dont know about all that... but i have a flexalite hooked up to a switch so I can turn it on whenever need be.

67mustang302

Run an automatic fan controller. You forget to turn the fan on once and you burn up your engine.

.boB

Amp draw depends on fan size. Bigger fans with bigger motors will flow more air. But they also need more power.

Some cars can really pick up some power by gettuing rid of the big belt driven fan with clutch. A simple flex fan, though, won't matter much.

turbo87stang

my buddy had an electric fan on his ranger that had a 5.0 engine in it well one day he forgot to turn the fan on and he went out mudding and the engine blew so def get an automatic fan controller its real easy to be forgetful

mostdef

first no more replacing clutches for the damn stock fan!!!! pain in the butt... second takes some stress off the water pump and a lil power but not too much...u really cant feel any difference...and if ur scared about forgetting to turn the fan on...do it right wire it to a relay and either thermostat or to ingnition so its on when the cars on...and about it drawing power stock 5.0 alternators suck any way so upgrade it to a 130 amp find a 3g alternator from a 95 or newer and get it installed... and the electric fan just looks alot nicer

302army187

Mark 8 electric fan a a DCC controler. Fan is gonna be $75 on ebay but pulls upto 5k CFM. the dcc controler is about $130 but will control the fan for you, and even run it at 20% power non stop for people with underdrive pulles and such.

thats what im running, i noticed the RPM's respond better, and the throttle seemed more responsive, but there's no "wow" extra anything to it.

but every bit counts.

I also gained 1-1.5MPG after the install.

Plus i have a switch in the car where i can flip on the fan at the track while the car is off to cool off the engine faster.


good luck!

motorman524

I got this one http://www.summitracing.com/parts/HDA-3690/ ive seen quite a few of these fans when I go to events. it is on sale if your in the market for one.

FLcracker9

Like mentioned above, the best way to run it on a street machine, is to run the fan off of a relay ($5), that is powered by a "key on" wire from the key switch. It's also best to use a themostatic controller, which Summit carries an adjustable one for less than $30. Some people that drag race a lot, prefer to wire it directly to a toggle switch, so they can control the fan manually while in the cool down area.

http://summitracing.com/parts/FLX-31147/