Electric Fans

Silverado Brethern · #1 10-18-2005, 05:09 PM

My engine has a whole assortment of problems, namely a blown haed gasket and still mysterious disappearance of oil, also a busted clutch fan.
So I see this as a prime opportunity to get electric fans since I want them for a rebuild anyway.

Soo what brand works the best and is easiest to install? I'm sure there are other thread on this subject but I need details and am otherwise too lazy to search. I finding flex-a-lite to be the most recommended but I thought I would see if anyone here has one. How is the temperature relay hooked up? Idealy I want a unit that has it's own control and can be wired to the computer. Otherwise I may have to drill and tap a sensor into the water neck, which I'd rather not do. I need one soon cuz my fan will not disengage and that puts me around 5 mpg under normal driving.

jethro_3 · #2 10-18-2005, 06:58 PM

The fans for a 28" radiator is the fans from an LS1 Camaro or Trans Am. 2 12" fans in the shroud usually $100+ from a local junkyard work best.

The best non-PCM controller is the Delta Current Control. Flex-A-Lite controllers have problems failing if you do searches on other site you will find this true....

Good Luck!

Silverado Brethern · #3 10-18-2005, 07:17 PM

My rad. is 34"....if that helps. I asked the mech. about fans from an LS1 engine and he said they likely would not or would be hard to hook up to my engine.

BlenderWizard · #4 10-18-2005, 07:35 PM

get some '05 fans from a silverado... I dunno how well it's gonna work on a 97, tho

jethro_3 · #5 10-18-2005, 07:49 PM

If you go '05 you gotta make sure you have 34" inside the tanks and 18 1/2" +/- in the vertical......

99silverado32 · #6 10-19-2005, 12:51 PM

how many cfms do the ls1 fans put out?

sc_customs · #7 10-19-2005, 02:05 PM

I've got flex-a-lite fans on my 4.8L (2 13"). They work great!.....now.
Flex-a-lite had a problem with the fuse holder melting. Before they sent out this recall, however, I had already fixed the problem. Besides that, they work great. The relay is a snap to wire if you have any automotive experience whatsoever. The temperature is regulated by a probe that slides in between the fins in the radiator. All you have to do is adjust the relay to keep the coolant at a certain temp. Took me awhile to install the fans though, the mounting brackets they send are useless; had to make my own.

Silverado Brethern · #8 10-19-2005, 08:13 PM

Yeh i had heard about stickin a sensor in the rad fins. That wouldn't be the greatest cuz my rad is often in contact with mud and water and often has mud packed in the fins. And I don't have any acess to metal fab. tools so I want a kit thats complete and will work good as is.

Anyone know where I can get info about fans from 05 silvs? link?

jethro_3 · #9 10-19-2005, 08:20 PM

If you have a local shop that can change the PCM with HPTune or LS1Edit you can buy a Nelon Harness and the sensors in your block and the A/C controls will turn your fans on. Very reliable, kept my old truck at the set temp of 185* 100% of the time!

BlenderWizard · #10 10-19-2005, 09:05 PM

I believe you will find the answer to many of your questions here: http://www.automotiveforums.com/vbul...3&page=2&pp=15

Silverado Brethern · #11 10-19-2005, 10:10 PM

Hmm....so if i can get ahold of fans from an 05 6.0L they should fit since I have a 34" rad and then if i get a wiring harness from Nelson, the fans will be run by the PCM, right?

Next question, best/cheapest place to get those fans?

BlenderWizard · #12 10-19-2005, 10:19 PM

well, allen, or someone, would have to activate the e-fan setup in your PCM

jethro_3 · #13 10-19-2005, 11:21 PM

$198 delivered to your door from eBay.

To run from PCM you need someone, Allen or other, to turn on the PIN in the PCM to control your harness.

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