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Has anybody tried replacing there regular fan with electric on a f250 4x4 with a 460.I have come across a old set of twin elec. with thermostat control.I am thinking about putting them on.would like thoughts on it.thanks
https://www.ford-trucks.com/forums/1...ontroller.html
Here's a thread I commented and dropped some pics in about electric fans. Big blocks definitely need lots of air moving across the radiator. If I pull a long grade(7 mile long one near my home) with a heavy load (10K plus) my truck will get up around 220-230*. As soon as it gets some relief it will come back to 200*. If you are running the A/C and towing something big, it will keep up if you drive it with an eye on the temp gauge and drive it right. If you just keep hammering on it, it just can't keep up. For light loads and every day driving, I wouldn't trade it for the world. I will be building another truck in the near future and will do another efan on it, but I'm going to try to go even bigger!
thanks very nice setup.she is retired from towing anything heavy.the most will be about 2 ton,wood pellets.besides that up and down the freeway once in a while.camp and back.mine are like your small set.
The small ones in the pic are 8" ers. Those two by themselves would not cool mine even running empty. What size are yours exactly? I wouldn't recommend anything less than two 12" ers and they need to be rated to move some serious air. Two 14" high volume fans would probably be sufficient for normal use.
mine are 10inch I had them on my street rod mmany moones ago,450hp small block chevy.
A street rod is very different from a truck. Vehicle weight, engine load and duty cycle are all very different and makes a huge difference in heat load.
A 450 hp street rod might only be at maximum power for 15-30 seconds at a time. The 240HP 460 in your truck could be near max power for 3,4 maybe even 10 minutes at a time if it's a super long grade.
The best thing you can do for a 460 to improve FI is to bump the base timing a bit (12*BTDC), drive with an egg under your foot, and keep your top speed down (right lane, 60 MPH)
I think I recovered a little horsepower from the parasitic drag of the fan but in reality neither HP nor MPG gains are noticeable. It's still a neat mod to do, but don't expect any miracles. It is very hard to re-invent the wheel.
I did find out the hard way about the throttle,my old trck you had to get on it all the time,351,when I got this the first time I drove it I smoked the rears,oopsI did advance the timming.I am retired now and its something to do.I thank you all for your imput its nice to hear everyones advice,its all good.one more,I am going to dump the 410 gears and go with 373.
I disagree, big truck fans soak up substantial amounts of power...relatively speaking. When my fan is whirling on my 351, I barely feel it. When it's whirling in my dodge it sounds like a wind tunnel and I feel it engaging and releasing.
I've built many electric fan setups with nothing more than old taurus fans...if you build a tightly sealed shroud and use 2 of those (or better) you will be fine.
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