Electric Fan Conversion?
Senior User
Joined: May 2012
Posts: 192
Likes: 0
From: Derby, ks
ALL BS ASIDE... I have the 5.4 gas engine and i am running dual 12" 1200 CFM elec fans and have only seen my truck up to 185 tops.. i have an aftermarket temp gauge and they are on a manual switch to activate.. i only saw a 1mpg differance.. (better) now in my opinion.. the AC runs cooler now and so does the truck over stock to me... but all the above are IMPO!!!!! its up to you.. i dont tow alot and used it to help with the drag that the little 5.4 has a hard time dealing with in the heat of summer.. it also made the truck quieter due to not having the horrific sound of a fan blade and clutch spinning around in there.. the fans are also tapped into the power on the ac so if i dont turn the switch on once the ac is activated it will turn then on automatically.. i use this for my auto start in the summer.. 
Laughing Gas
Joined: Jun 2011
Posts: 1,223
Likes: 89
From: TN
I have run e fans on my street cars/trucks and my offroad jeeps and they work well. I still have 4 fans that I took off before I sold the vehicle. I have had a fleeting thought of putting some on my V10, but decide against it. The reasoning is, it takes ONE time for the engine to get hot to create issues. A V10 or any super duty engine is very expensive and not the easiest to swap. So, for all the gas I may save in fuel economy will not equal the cost of an engine swap. Therefore, I will keep my mechanical fan on and save the e fan for something less expensive to replace. But that is just my 2 cents worth.
Senior User
Joined: May 2012
Posts: 192
Likes: 0
From: Derby, ks
I have run e fans on my street cars/trucks and my offroad jeeps and they work well. I still have 4 fans that I took off before I sold the vehicle. I have had a fleeting thought of putting some on my V10, but decide against it. The reasoning is, it takes ONE time for the engine to get hot to create issues. A V10 or any super duty engine is very expensive and not the easiest to swap. So, for all the gas I may save in fuel economy will not equal the cost of an engine swap. Therefore, I will keep my mechanical fan on and save the e fan for something less expensive to replace. But that is just my 2 cents worth.
yes and thats why i still keep the mechanical fan in the bed in my tote just in case on a long haul it does crap out on me.. i will still have something to put on and cool it..
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