Electric Cooling Fans

Old March 21st, 2014, 12:45 PM
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Electric Cooling Fans

I'm considering going to E fans to free up some horsepower on my current build, and potentially provide better cooling on my future nitrous build.

My questions are:
How much CFM should I look for on a 455 based engine?
Are there any brands that I should consider, particularly brands that won't cost an arm and a leg but are good quality?
And lastly, is it worth it? I've heard arguments for both sides, but not from the Oldsmobile community...

Thanks all!
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Old March 21st, 2014, 01:04 PM
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If you search the site there is bunch of threads about this topic. If you want to spend the money buy twin Spal fans. Others have used junkyard fans out of Taurus or Stratus or similar. On my 69 Chevelle I used 2 fans out of 90s Caddy.
On a 455 I would do at least 2500cfm shrouded.

Last edited by 70cutty; March 21st, 2014 at 01:42 PM.
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Old March 21st, 2014, 01:26 PM
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My $0.02
As far as reliability, availability, cost, and flow, you're probably best off finding a GM or Ford fan that fits your radiator. A lot of the 68-72 A body guys use a 2000 ford windstar fan because they fit the radiator well. Most OEM ones move a lot of air. The windstar moves about 4000 cfm and I know a lot of big block guys use them.
Some of the aftermarket fans advertise big numbers but based on current draw and wire size, no way.
You can go the high dollar aftermarket, ie Spal, but I don't see much advantage over an OEM GM/Ford at 1/4 the price. And if it goes bad, you run to your local Auto parts store and get another. Just gotta find one that fits your cars radiator.
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Old March 21st, 2014, 04:29 PM
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Either OEM fans that cover your rad or the Derale fans. Supposedly the move a lot of air and are reasonably priced US made fans. I have the Stratus 4 cyl fans, move a lot of air.
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Old March 25th, 2014, 10:53 PM
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Thanks for the help guys! I think I'm going to look into the Derale 4000CFM dual puller fans...
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Old March 28th, 2014, 04:38 PM
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I put Ford windstar dual electric fans in my 70 cutlass with a built 455 engine. It runs 180 degrees with only one fan running. These fans blow a ton of air so you really only need one fan running to keep the engine cool.
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Old March 31st, 2014, 05:23 AM
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I have a set of Summit dual puller fans on my '65. I switched from a mechanical flex fan to the electric fans and couldn't be happier. I have them set to come on on a thermostat but also have a manual overide switch under the dash that I use to cool it down while the engine isn't running between passes at the track.
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Old March 3rd, 2016, 03:11 PM
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Originally Posted by 70olds455 View Post
I put Ford windstar dual electric fans in my 70 cutlass with a built 455 engine. It runs 180 degrees with only one fan running. These fans blow a ton of air so you really only need one fan running to keep the engine cool.
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Old March 3rd, 2016, 03:12 PM
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What part # fan are you using? I was thinking about using a dual fan from a Contour Dorman #620-104. Thx!!
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Old March 3rd, 2016, 05:08 PM
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I used a ford fan, Lincoln mark 8 iirc, and with a 160 t stat it will sit and idle as long as I want and sit right at 160 on my gauge.on the freeway I use a manual override to turn it off. Also I'm controlling it with a progressive controller with soft start as with a normal on off type thermo switch it would nearly kill my engine of it came on at idle.
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Old March 3rd, 2016, 05:11 PM
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Btw I was running dual 10" fans and a shroud that covered the entire core and it wouldn't stay cool till I put the ford fan on
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Old March 3rd, 2016, 05:31 PM
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Thanks for the info!!
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Old March 3rd, 2016, 05:59 PM
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I'm running a pair from a late 90's Grand Am- $10 from the you pull it.
Whateveryou do, make sure you have enough alternator for it.
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Old March 3rd, 2016, 06:23 PM
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Im running a Powermaster 150 amp alt. Thx again!!
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Old March 3rd, 2016, 07:04 PM
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fan controller im using http://www.summitracing.com/parts/flx-33054/overview/ has some good features and has worked flawlessly for me
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Old March 3rd, 2016, 07:39 PM
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Thanks For the link!
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Old March 3rd, 2016, 07:57 PM
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Im running a set of fans from a 95 9C1 caprice if its good enough for a squad car its good enough for me. also almost same dimension as the stock radiator .
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Old March 3rd, 2016, 09:09 PM
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I am running a CCI (Cooling Components Inc.) fan on my 54. It is mounted in a shroud and fits my 54. It is two speed and I control it with a toggle switch under the dash. It pulls 2500 cubic feet per minute and does the job.
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Old March 4th, 2016, 04:20 AM
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Thanks guys for all of the input!!
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Old March 4th, 2016, 11:10 AM
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Originally Posted by Bender1972442 View Post
What part # fan are you using? I was thinking about using a dual fan from a Contour Dorman #620-104. Thx!!
I don't know the part # on the fans. They came off a Ford Windstar van. You should be able to get them real cheap from a junkyard. Here is what they look like in the car.
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Old March 4th, 2016, 02:18 PM
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Nice set up. Keeps things cool sitting at idel?
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Old March 4th, 2016, 07:36 PM
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Twin Spals with a be Cool rad. There are definitely cheaper alternatives!

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Old March 4th, 2016, 08:39 PM
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Originally Posted by 70olds455 View Post
I don't know the part # on the fans. They came off a Ford Windstar van. You should be able to get them real cheap from a junkyard. Here is what they look like in the car.
I have 2 of these fan setups I pulled from Windstars that were donated to the firehouse to be cut up. One was actually from one of our members cars . What are you using to control these fans? I know they pull a lot of amps, so I'm curious what your using for relays. Do you have them wired separately with t-stat controllers?
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Old March 4th, 2016, 08:42 PM
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FWIW i run mine dual with one switch and a 30 amp fuse. No relay. no controller, No issues. I just flip them on once i hit 185 at a light or while dricing Just my experience. My car in hot days will not go over 190 cold days i barely need the fans unless im at a reallllllly long light.
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Old March 4th, 2016, 09:43 PM
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im no good with switches, i have to turn them on before i start driving or i forget. the controller im using is built to handle two fans, idk exactly how many amps my fan pulls at start up but ive read its 40+. with the soft start it keeps that huge initial draw from happening, then progressively increases fan speed with temp.

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Old March 4th, 2016, 09:50 PM
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I religiously watch my gauges , so i flip the switch as i need . As for the draw of power i never ran into issue. I run an electric water pump , and the fans along with my radio and the alt. does its job. Just an old 3/4 ton mid 80's chevy truck alt bought from autozone 8 years ago.
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Old March 5th, 2016, 03:05 PM
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do you have any pics of your set up and wiring diagram? Thx Adam!
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Old March 5th, 2016, 03:47 PM
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I wanted to see specifically how 70olds455 did his because I was thinking of going with the same setup.
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Old March 5th, 2016, 04:28 PM
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http://www.amazon.com/Dorman-620-131-Radiator-Fan-Assembly/dp/B000E3010M

Originally Posted by dfire25 View Post
I wanted to see specifically how 70olds455 did his because I was thinking of going with the same setup.
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Old March 7th, 2016, 02:50 PM
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Originally Posted by garys 68&72 View Post
My $0.02
As far as reliability, availability, cost, and flow, you're probably best off finding a GM or Ford fan that fits your radiator. A lot of the 68-72 A body guys use a 2000 ford windstar fan because they fit the radiator well. Most OEM ones move a lot of air. The windstar moves about 4000 cfm and I know a lot of big block guys use them.
Some of the aftermarket fans advertise big numbers but based on current draw and wire size, no way.
You can go the high dollar aftermarket, ie Spal, but I don't see much advantage over an OEM GM/Ford at 1/4 the price. And if it goes bad, you run to your local Auto parts store and get another. Just gotta find one that fits your cars radiator.
I found a 2000 but its 34" wide and 17.5" high. I need a 28 x 18. Anyone have any info? Thx!
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Old March 16th, 2016, 06:33 PM
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Originally Posted by dfire25 View Post
I have 2 of these fan setups I pulled from Windstars that were donated to the firehouse to be cut up. One was actually from one of our members cars . What are you using to control these fans? I know they pull a lot of amps, so I'm curious what your using for relays. Do you have them wired separately with t-stat controllers?
I usually only need one fan running to keep my Olds 455 engine at 180 degrees. These fans blow a ton of air. I have each fan wired to a switch in the car so I can turn them on manually. I bought a electric fan wiring kit with relays from JEGS when I installed them.
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Old March 16th, 2016, 07:03 PM
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What year windstar are these fans off of.
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Old March 17th, 2016, 05:37 PM
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Originally Posted by young olds View Post
I used a ford fan, Lincoln mark 8 iirc, and with a 160 t stat it will sit and idle as long as I want and sit right at 160 on my gauge.on the freeway I use a manual override to turn it off. Also I'm controlling it with a progressive controller with soft start as with a normal on off type thermo switch it would nearly kill my engine of it came on at idle.
What is the year of the fan?
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Old March 17th, 2016, 10:51 PM
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I just recently noticed my fan has the markings from the junkyard still, 98 Lincoln mk8 iirc, I'll double check tomorrow. I just got my engine running again, 195 thermostat since it's still cold here, and once the fan kicks on my temp gauge stays right at 195 in any situation. I was running it pretty hard today, had to test the new combo and my dad wanted to see what his vette could do, gauge never hit 200.
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Old March 17th, 2016, 10:58 PM
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I think I forgot to say earlier. my 66 has the long water pump, wanted aluminum and couldn't find the short style like stock 66 had. Between the long pump and the fan I had to move my radiator forward so the water pump pulley wouldn't hit the fan. Idk if you'll have that problem in your car as I moved the radiator forward about the same distance as the difference between a long and short pump. I'll get the exact year off the fan tomorrow and take some pictures.
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Old March 18th, 2016, 04:52 AM
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Originally Posted by young olds View Post
I just recently noticed my fan has the markings from the junkyard still, 98 Lincoln mk8 iirc, I'll double check tomorrow. I just got my engine running again, 195 thermostat since it's still cold here, and once the fan kicks on my temp gauge stays right at 195 in any situation. I was running it pretty hard today, had to test the new combo and my dad wanted to see what his vette could do, gauge never hit 200.
Sounds like a great fan. Is that a dual fan or single? Amp output? Thx for all the info!!
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Old March 18th, 2016, 10:11 AM
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It's a single fan and single speed, some ford fans have 3 wires and are two speed. From the reading I've done they have about a 40 amp initial spike, which is why I went to a controller with soft start and pwm, and continuous is supposed to be in the 20's at full speed. Idk if it's the best thing out there but for a junkyard price and my personal experience it will be my go to fan in any project it will work in
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Old March 18th, 2016, 11:01 AM
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Use Volvo fan controller

Originally Posted by dfire25 View Post
I have 2 of these fan setups I pulled from Windstars that were donated to the firehouse to be cut up. One was actually from one of our members cars . What are you using to control these fans? I know they pull a lot of amps, so I'm curious what your using for relays. Do you have them wired separately with t-stat controllers?
__________________________________________________ ____
I did a lot of research when deciding what and how on radiator cooling fan on 455 in my 47 Olds convertible. I went with junkyard 2-speed fan/shroud from 80s Taurus that fit the radiator perfectly and I switch it with a two speed fan controller from junkyard Volvos of about 80s era. They contain the necessary relays in a small and compact unit and are a cinch to wire. They're great and cheap at pick n' pull yards. I used a Bosch type relay to switch and keep fan from running on after ignition turned off. See photos. The hardest part was finding a two speed fan switch with the temp setting I wanted and than ran off the coolant. The Hollister Road Company (on the internet) can help you with that.

Aftermarket fans vastly over rate their cfms. As one poster noted just look at amperage and wire size. On my 36 Chevy with LT1 engine I found Spal which is supposed to be great to be very mediocre and their two speed programmable controller was laughable. They finally quit making it after so many complaints.
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Old March 18th, 2016, 11:23 AM
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Originally Posted by young olds View Post
It's a single fan and single speed, some ford fans have 3 wires and are two speed. From the reading I've done they have about a 40 amp initial spike, which is why I went to a controller with soft start and pwm, and continuous is supposed to be in the 20's at full speed. Idk if it's the best thing out there but for a junkyard price and my personal experience it will be my go to fan in any project it will work in
Thanks a ton for the info!!
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Old March 18th, 2016, 04:57 PM
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Here's the pictures, excuse the mess it boiled over while breaking in the cam cause I forgot to plug the fan back in. I was able to use my existing radiator hoses after I moved the rad forward. The fan is out of a 97 mk8
79D08C5A-6252-4D56-B254-66A83AB4B269_zps9jpqhzb9.jpg

C687AF15-F8BE-48A6-B724-5D2480029DD3_zpst9uob4zk.jpg

Last edited by young olds; March 18th, 2016 at 05:03 PM.
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