Has any one installed an electric fan in place of the engine fan on a truck with a 400, and will it cool suficiently with out the engine fan? This would be with manual trans and no A/C.
Thanks for any input.

Tern

 

a guy i know did on his mud truck. 96 taurus wagon dual electric fans. 460 w auto. he has it on a toggle to turn on and off as needed. ive heard of others using same fan wired in with thermostatic switch so runs automatically.

 

Do a search for lincoln mark VIII electric fan. I just scored one for $30 at a boneyard a couple weekends ago, and it is a perfect match for the radiator in my 77 highboy. It fits like it was made for it. There is a lot of info out there regarding this fan. It is a two speed, and it flows a ton of air. It also uses a lot of power, like 30 amps when on "high", but some guys say that they never have to use it on high. I have a fairly built 460 in my truck, and just by judging from the way this new fan fits the radiator and from the info I've gathered about it's flow potential, I'm sure it will cool my junk. I'll post a follow up when I get my truck back together in a couple months(frame is currently bare and awaiting sandblasting).

Good luck,

Jared

Also, in order to use the two speed function, I'm assuming that one will need to wire up two different relays. There are many aftermarket kits for wiring electric fans, but it is fairly straightforward if you have some electrical knowledge.

 

Need a fan that turns around 5000cfm to properly cool engine. The lincoln set up works good run it my self but need a few more cfm's for pulling big mtn's under load on hot summer day. 75 degree's and not a problem with lincoln set up.

 

Thanks for the info, I like the sounds of that Lincoln Mark 8 fan set-up.

 

i just put a mark8 fan in 95 ram and am very pleased with it......it blows a TON of air and i can def. tell a gain in power throughout.....very worth it.......i would probably upgrade your alternator 1st tho....

 

What kind of controller did you use?

 

i used this one......the probe goes in your radiator hose, but ive seen some ziptie it to the fins and work fine......



AutoZone.com | | Cooling Fan Control | ELEC FAN CONTROL ECONOMY

 

Yeah I was just getting back and mention a alternator upgrade is mandatory if fan is on high. I have a alternator that puts out 103 amps at 1500 rpm and goes on up to 240 amps. I have winches on my trucks and everything working at once sure sucks things down on the volts in a hurry if winching. I now run dual batteries also with isolator between batteries.

 

Thanks, I'll look into a bigger alternator.

 

I have installed a markviii fan on my '73. I will try and post some pics next week. It is a 2 speed fan but I think the second speed was controlled by a module that varied the current based on engine speed. I can hook up to either fan input terminal and it seems the fan speed is the same. Amp draw is over 100 at startup and 40-50 amps when running so alternator will need an upgrade as most alternators are 45-65 amps on these trucks. I have 75a 2g alternator (low rpm output stinks) and will be soon changing to 3g or 6g 130A alternator that will put out 80a or more at idle. I am using a 90A continuous duty solenoid as the relay with a manual switch to cut on and off, buy Hayden/Imperial makes a temperature controlled switch for around $35 that can also be used. This fan is a puller, so make sure you don't cross polarity and make pusher.

 

yeah, i noticed the speed thing on mine also...

 

I said based on engine speed but I really don't know...could have been temperature, etc., but it definitely adjusted through a module, and I am assuming current flow.

 

Here is pic of fan installed...although it is an aftermarket radiator. Notice the continuous duty relay mounted to the core support on the right. The fit is perfect for this radiator.

 

One more shot from the side to show clearance to pulleys. You like my serpentine belt??? My 7 year old son weaved that on their...it's a lawnmower belt...lol...Also the red wire coming over the top of the radiator to the solenoid relay is my 12v + switch to turn on the relay. I have it manually controlled from the dash to cut on and off when I want.