dual electric fans on a budget - The 1947 - Present Chevrolet & GMC Truck Message Board Network

djracer · 10-03-2004, 09:00 PM

I found a fan setup that works really well on our trucks. I bought a dual fan setup from a 91 maxima and with very little mods I have it mounted! I'll try to post pics if anyone is interested! I only paid 50 bucks for it but I'm buddys with the guys at the salvage yard! I trimed a little off each side and shaved the top mounts off and drilled new holes in the top and bottom of my radiator. I bolted the unit to the radiator with 4, 1/4 by 2 1/2 bolts.

Brainchild · 10-03-2004, 09:09 PM

I am intrested.anytime you can take rotating mass off the engine you gain HP,even on a stocker like mine

krue · 10-03-2004, 11:00 PM

How about taking some pics and writing up a thread for the FAQ board?

Maybe we can get some other folks to show their electric fan setup.

68w/sbc406 · 10-03-2004, 11:28 PM

i bought a 16 inch fan from the local parts store and bought some metal from an air duct shop and made my own shroud. put a relay in for the power. it runs a little hot cause the drivers side air flow is all blocked off. i am about to look for some 7 inch fans to put in there

*1972C10* · 10-04-2004, 03:15 AM

Here are mine They are pull offs off city of phoniex trucks they upgrade oil coolers and fans due to the high heat

Friend of mine managed to get a pallet of new pull off oil coolers with these 16" and 10" fans installed I was getting them for 20 a pair for awhile I ended up getting four pair and sold quite a few for 45 a piece.

Blue Beard · 10-04-2004, 07:27 AM

Are the onew from the 91 thermastatic controlled?

djracer · 10-04-2004, 10:48 AM

Blue Beard I don't know they have 4 wires per fan from just playing with them with my jump box I can tell you they are at least dual speed. 1 of the fans is 4 blade and 1 is 5 blade. I am going to a friends shop and check out the wiring on the maxima.

djracer · 10-04-2004, 11:09 AM

I haven't mounted the bottom yet I am planning on looking for a core support today.

The fuel cell and filter got mounted yesterday also now it time for lots of steel braid and aluminum fittings. I can't wait to get the tank out from behind the seat so I can mount my 2000 silverado 40/20/40 seat! It should help the weight transfer too.

djracer · 10-04-2004, 03:46 PM

ttt

Russell · 10-04-2004, 05:03 PM

I installed a set of dual electric fans from a TPI Trans Am. To install them so they pushed air rather than pull it, I had to open the motor up, cut out the diode that was installed by GM, then put a new diode in in the "right" direction. Diodes are important so the fan doesn't send any energy back up the line to your fan relay / computer (in my case) as they act like alternators if they are spinning without having any energy put into them.

I gotta move the left one over a bit, somehow I managed to mis measure where I had to drill my holes,

*botboy* · 10-04-2004, 05:04 PM

I like how clean electric fans look, and they help with mileage some too (between converting to 454 TBI EFI and adding electric fans on my '72 I gained almost 4 MPG with a lead foot).

I live in minnesota so heat wasnt too big of a concern, even in the summer...I got a 16" electric fan from ebay for $59, and just zip-tied it thru the 4-core radiator, and had no problems to speak of.

10-03-2004, 09:00 PM	#1
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	dual electric fans on a budget/ with pics I found a fan setup that works really well on our trucks. I bought a dual fan setup from a 91 maxima and with very little mods I have it mounted! I'll try to post pics if anyone is interested! I only paid 50 bucks for it but I'm buddys with the guys at the salvage yard! I trimed a little off each side and shaved the top mounts off and drilled new holes in the top and bottom of my radiator. I bolted the unit to the radiator with 4, 1/4 by 2 1/2 bolts. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole! Last edited by djracer; 10-04-2004 at 12:10 PM. Reason: rename

10-03-2004, 09:09 PM	#2
Brainchild Still drivin' a Rat Rod Join Date: Sep 2004 Location: Monett Missouri Posts: 4,925	I am intrested.anytime you can take rotating mass off the engine you gain HP,even on a stocker like mine __________________ Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the a$# 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website

10-03-2004, 11:00 PM	#3
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,450	How about taking some pics and writing up a thread for the FAQ board? Maybe we can get some other folks to show their electric fan setup. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

10-03-2004, 11:28 PM	#4
68w/sbc406 Got Light Emitting Diode? Join Date: Apr 2004 Location: Newberg, OR Posts: 2,485	i bought a 16 inch fan from the local parts store and bought some metal from an air duct shop and made my own shroud. put a relay in for the power. it runs a little hot cause the drivers side air flow is all blocked off. i am about to look for some 7 inch fans to put in there Attached Images __________________ 1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's(the family car) 1993 Cherokee work ride/weekend wheeler

10-04-2004, 03:15 AM	#5
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Here are mine They are pull offs off city of phoniex trucks they upgrade oil coolers and fans due to the high heat Friend of mine managed to get a pallet of new pull off oil coolers with these 16" and 10" fans installed I was getting them for 20 a pair for awhile I ended up getting four pair and sold quite a few for 45 a piece. Last edited by 1972C10; 07-02-2007 at 01:15 AM.

10-04-2004, 07:27 AM	#6
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Are the onew from the 91 thermastatic controlled? __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

10-04-2004, 10:48 AM	#7
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	Blue Beard I don't know they have 4 wires per fan from just playing with them with my jump box I can tell you they are at least dual speed. 1 of the fans is 4 blade and 1 is 5 blade. I am going to a friends shop and check out the wiring on the maxima. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-04-2004, 11:09 AM	#8
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	here are a couple of pics I haven't mounted the bottom yet I am planning on looking for a core support today. The fuel cell and filter got mounted yesterday also now it time for lots of steel braid and aluminum fittings. I can't wait to get the tank out from behind the seat so I can mount my 2000 silverado 40/20/40 seat! It should help the weight transfer too. Attached Images __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-04-2004, 03:46 PM	#9
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	ttt __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-04-2004, 05:03 PM	#10
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	I installed a set of dual electric fans from a TPI Trans Am. To install them so they pushed air rather than pull it, I had to open the motor up, cut out the diode that was installed by GM, then put a new diode in in the "right" direction. Diodes are important so the fan doesn't send any energy back up the line to your fan relay / computer (in my case) as they act like alternators if they are spinning without having any energy put into them. I gotta move the left one over a bit, somehow I managed to mis measure where I had to drill my holes, __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

10-04-2004, 05:04 PM	#11
botboy Account Suspended Join Date: Dec 2003 Location: Delano, MN Posts: 630	I like how clean electric fans look, and they help with mileage some too (between converting to 454 TBI EFI and adding electric fans on my '72 I gained almost 4 MPG with a lead foot). I live in minnesota so heat wasnt too big of a concern, even in the summer...I got a 16" electric fan from ebay for $59, and just zip-tied it thru the 4-core radiator, and had no problems to speak of.



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