Is 10" enough? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cochino12 · 12-28-2004, 12:30 PM

For electric fans?

I have the opportunity to get 2 - 10" spal electric fans free, but I am unsure if they will be big enough for my truck. I searched and found some people using dual 11" but nothing about a 10". Any ideas?

Prerunner1982 · 12-28-2004, 01:04 PM

Quote:

Originally Posted by cochino12

Is 10" enough?

maybe you should ask her and not a message board full of guys..

If they are free, take em... if they dont work sell em...

bloertcher · 12-28-2004, 11:10 PM

I've had better luck from a single 16" or 18" fan,myself.Honestly,if you can still run your engine driven fan,I personally think it's still a better setup.Yes,electric fans free up power,but they draw precious amperage.Add this to the other electrical goodies we all have,(stereo amps,etc.)and your running out of juice unless you gotta big ol' alternator.Just my two cents,and worth about that!

Destructo · 12-28-2004, 11:16 PM

I run one 16" and a 10", Depending on how much air those things move they might do the trick, but which truck is it going on? Your street truck or 4wd truck? I found that even with both my 16" and 10" on sometimes off-road it will still get a little warm, but on the street just my 16" usually keeps up just fine. I rarely use the 10".

cochino12 · 12-28-2004, 11:36 PM

Quote:

Originally Posted by Destructo

I run one 16" and a 10", Depending on how much air those things move they might do the trick, but which truck is it going on? Your street truck or 4wd truck? I found that even with both my 16" and 10" on sometimes off-road it will still get a little warm, but on the street just my 16" usually keeps up just fine. I rarely use the 10".

They would be for the K5, I will be towing a real small trailor next summer and figured they would help keep cool in traffic.

bloertcher · 12-28-2004, 11:46 PM

If it were me,I'd make sure that my fan and clutch were in good shape,( the shroud is still there,right?)and if need be,upgrade to a new radiator.You can get the big block 4 core for around $200 new.I don't know what they cost,but diesal radiators are MASSIVE.In my opinion,electric fans are kind of a "looking for every ounce of power" thing.I ran them when I used to mudrace,but that was a situation where it was full throttle for 5 or 6 seconds,then your done.For heavy duty use and towing,I vote mechanical.

magnethead · 12-29-2004, 12:21 AM

yea, our truck still runs mechanical with no problems. Take the 10's and sell em-

mathematically, dual 10's have 157 sq. inches of air movement (roughly), a single fan would need a diameter of 7.25" to have the same area. So by keeping your mechanical fan (say 14", 153 sq. in.), you'd only have 3 sq in less than if u went to electric. I say keep the mechanical.

12-28-2004, 12:30 PM	#1
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Is 10" enough? For electric fans? I have the opportunity to get 2 - 10" spal electric fans free, but I am unsure if they will be big enough for my truck. I searched and found some people using dual 11" but nothing about a 10". Any ideas? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

12-28-2004, 11:16 PM	#4
Destructo Registered User Join Date: Sep 2003 Location: Lewisville, NC Posts: 1,836	I run one 16" and a 10", Depending on how much air those things move they might do the trick, but which truck is it going on? Your street truck or 4wd truck? I found that even with both my 16" and 10" on sometimes off-road it will still get a little warm, but on the street just my 16" usually keeps up just fine. I rarely use the 10". __________________ 1985 Scottsdale Shortbed 4x4 Stout 350 with some "upgrades"-700r4-33x12.5" Mud Tires, Warn 8274-50 winch. 2005 Chevrolet Colorado Regular Cab 2wd 4-banger, 5 speed, Street Pack with 3.73 axle.

12-28-2004, 11:10 PM	#3
bloertcher Registered User Join Date: Jul 2003 Location: Springfield,Mo. Posts: 305	I've had better luck from a single 16" or 18" fan,myself.Honestly,if you can still run your engine driven fan,I personally think it's still a better setup.Yes,electric fans free up power,but they draw precious amperage.Add this to the other electrical goodies we all have,(stereo amps,etc.)and your running out of juice unless you gotta big ol' alternator.Just my two cents,and worth about that!

12-28-2004, 11:46 PM	#6
bloertcher Registered User Join Date: Jul 2003 Location: Springfield,Mo. Posts: 305	If it were me,I'd make sure that my fan and clutch were in good shape,( the shroud is still there,right?)and if need be,upgrade to a new radiator.You can get the big block 4 core for around $200 new.I don't know what they cost,but diesal radiators are MASSIVE.In my opinion,electric fans are kind of a "looking for every ounce of power" thing.I ran them when I used to mudrace,but that was a situation where it was full throttle for 5 or 6 seconds,then your done.For heavy duty use and towing,I vote mechanical.

12-29-2004, 12:21 AM	#7
magnethead 7000 #'s of american IRON Join Date: Dec 2004 Location: north tx Posts: 883	yea, our truck still runs mechanical with no problems. Take the 10's and sell em- mathematically, dual 10's have 157 sq. inches of air movement (roughly), a single fan would need a diameter of 7.25" to have the same area. So by keeping your mechanical fan (say 14", 153 sq. in.), you'd only have 3 sq in less than if u went to electric. I say keep the mechanical.



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