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12-03-2012, 06:32 PM
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#1 |
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Registered User
 
Join Date: Apr 2010
Location: Louisiana
Posts: 970
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Electric or mechanical fan?
I am putting a 6.0L in my 72 Chevy truck. It will have a cam in it. This is a show truck that doesn't see many open road miles, just shows. I'm wondering if the electric fan is the way to go, or just better for cosmetics. And will the stock alternator handle the increased load? Or go with the low maintenance, old faithful mechanical fan (that if used would Probly dissaprear in my fan shroud). I realize the electric would save me about 15 horsepower. Opinions? Thanks
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12-03-2012, 09:09 PM
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#2 |
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Registered User
Join Date: Nov 2012
Location: Salt Lake City, UT
Posts: 520
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Re: Electric or mechanical fan?
Run a relay with the electric fans and you won't have a problem with the alternator. The electric fans use less power because they are only on when needed. It's even nicer to get two speed fans. Electric fans look more neat and don't require a fan shroud. So, more space. I use two 14" electric fans. They work fine. If you're climate is VERY hot, like in Arizona or southern states, stick with the stock clutch fan. But since it is a show truck without seeing miles, go with electric. Unless the price of the electric fans makes you change your mind, lol.
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12-03-2012, 11:30 PM
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#3 |
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Registered User
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
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Re: Electric or mechanical fan?
electric fans are the only way to go....
__________________
my build threads '86 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415628 '67 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=635078 '63 GMC http://67-72chevytrucks.com/vboard/s...d.php?t=674682 |
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12-04-2012, 01:11 AM
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#4 |
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Electric or mechanical fan?
Most swaps use an electric rad fan unless trying to be super low budget, and most new cars are coming with electric fans at this point. Excluding the occasional failure due to poor wiring or lack of relay use, electric fans really don't burn motors out that frequently, and its doubtful you would ever see a real reliability difference in the trucks life.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING  |
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12-04-2012, 04:31 PM
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#5 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: Electric or mechanical fan?
had mine on the truck for 3yr or more now...and were made for our trucks
__________________
Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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12-04-2012, 04:41 PM
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#6 |
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Registered User
Join Date: Jan 2007
Location: Central Coast California
Posts: 1,026
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Re: Electric or mechanical fan?
I like being able to control the on/off temp of the fans with these LS motors. Half the time they don't even come on...
__________________
1972 K20 Suburban 5.7/700r4/NP205 Dana 44/H052 Sold  1972 C10 5.3L/4L60E 12bolt 5Lug - Sold 1971 K5 Blazer 6.0L LQ9 4L60E NP205 Dana 44/H052!!!  1970 K3500 1ton CrewCab 8.1L/Allison1000/NP205 Dana 60/14B!!!! - Sold 1984 K10 SWB 7.4L/4L80e/NP208 Corp 10/12 bolt Sold 1988 V30 CCLB 7.4L/TH400/NP205/Dana 60/Dana 70/3.73!!! (Sold) 2003 K2500HD 8.1/Allison1000/NP263
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12-04-2012, 06:08 PM
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#7 |
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Registered User
Join Date: Apr 2010
Location: Louisiana
Posts: 970
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Re: Electric or mechanical fan?
Kurt, who mades the fan/shroud you have? Works with factory radiator? What could I expect to spend on a set up like yours? Thanks for the input. Too many choices! LOL
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12-04-2012, 06:12 PM
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#8 |
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Registered User
Join Date: Apr 2010
Location: Louisiana
Posts: 970
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Re: Electric or mechanical fan?
One more question for you Kurt. I see you are running 3:73 gear in the rear, I'm going to run a 16" wide tire and was wondering how it hooks up? Maybe 4:10, or 4:56 for me. Your thoughts?
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12-04-2012, 10:45 PM
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#9 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: Electric or mechanical fan?
e-fans are from a company call Old Air Products and is a direct fit. Seems like I paid around $250 for it.
hooking up just depends on sticky tires. my street tires aren't and thus it can spin them (275/60-15 BFG's) from a 50mph roll. Put on the 315/60-15 MT ET Street radials and things are considerably different.
__________________
Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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