Efans Installed

Max · Jun 18, 2009

No pics, nothing too crazy to see just lots of room now. I attempted to install the overdrive pulley but my alternator decided to consume the reverse thread nut and keep me from driving home. My boy Matt dialed it up with some quick work via air grinder and thread cleaner. I'll wait until I buy a big ass alternator to use the pulley, didn't notice a drop with my wiring upgrades anyway. I can definitely notice the increase in power, more than I expected actually. AC is fierce as hell now and it feels like there is less restriction on the engine. Solid upgrade and highly recommended :cheers:

---------- Post added at 07:45 PM ---------- Previous post was at 07:30 PM ----------

Crap mods move this ish to the 00-06 body style plz :think:

Tribalbreak · Jun 19, 2009

max u should post a how to with some pics of what you did... i would love to do this to my nali but just dont know what to use

Max · Jun 19, 2009

I'll see what I can do, I'd almost want another truck to do the swap on. Fans are kinda loud but it should sound nice with blower whne.

99COOP · Jun 19, 2009

yea i agree do a write up, i think JK might have on the old site wish i could find it.

jmildoc · Jun 19, 2009

i have been wanting to do this since i first read about it. just wish i could find a cheap and easy way to accomplish it

sschrader · Jun 19, 2009

I did mine about a month ago. Bought brand new GM fans off ebay ($250) and then a aftermarket thermostat from autozone ($30). 2 hours later, done. Works perfect. Quiet, more room and I just did a 600 mile trip pulling a 6X10 enclosed trailer with with race bike and gear. Got 15 mpg. I'm sure the fan helped, but intake also. Maybe since the truck is lower, I'm sure that helps. I dunno.

jmildoc · Jun 19, 2009

the only fear i face is the wiring part. how do you wire up fans that arent for your car... is it just a power and ground.. and a fuse? then the thermostat kicks them on at certain temp?

sschrader · Jun 19, 2009

Pretty much. The thermostat I used, power, ground, a ground and power for each fan, one going to the ac compressor (fans turn on whenever ac is on) and a temp sensor that goes into the fins of the radiator. It's adjustable to have it come on at different temps. Mine never goes past 210.

Max · Jun 19, 2009

jmildoc said:
the only fear i face is the wiring part. how do you wire up fans that arent for your car... is it just a power and ground.. and a fuse? then the thermostat kicks them on at certain temp?

Mine are controlled by the pcm and ac, just like the 05+ trucks come from the factory. I noticed a huge improvement in throttle response, pulls a bit harder too. I was driving to work today playing with a Range Sport, stood on it for a few seconds and I was doing 100 already. I'll try to get some pics and a quick writeup this weekend.

sschrader · Jun 19, 2009

Max said:
Mine are controlled by the pcm and ac, just like the 05+ trucks come from the factory. I noticed a huge improvement in throttle response, pulls a bit harder too. I was driving to work today playing with a Range Sport, stood on it for a few seconds and I was doing 100 already. I'll try to get some pics and a quick writeup this weekend.

I wanted to go that route, and still want to, do you have a tune? I called the dealer, I work at a shop so most of the guys know us, and they had no clue what I was talking about.

How did you go about yours?

Max · Jun 19, 2009

Justin turned on pin 42 when he did my tune. All I had to do was disassemble the connector on the pcm harness, run a wire off the ac compressor, run the power cables and connect the plugs. Easy stuff.

jmildoc · Jun 19, 2009

what if i dont want my ac on all the time? could i just have constant power to them and then when the thermostat tells them to come on they come on?

Max · Jun 19, 2009

They kick on when the AC is operating, otherwise they function normally. This system is essentially OEM sans the harness, call Justin or Jenna for one of those :cheers:

Alex29573 · Jun 20, 2009

any mpg improvements?

Max · Jun 20, 2009

I've been driving kinda fast and still have a solid 3/4 tank left, bet I got 1-1.5mpg. Truck is noticeably quicker, similar to the power gains I had from the intake but the throttle response is way better.

tybardy · Jun 20, 2009

gfdi... i want to do this mod so bad.... would you say it was possible to swap the e-fans from one truck (05 silvy) into my truck and then swap my belt driven fan into his truck? Would i need anything special to make the belt driven fan work in his truck? He tells me if i do some work on his truck, give him my old intake and detail it he will let me do this swap... as long as i make everything work in his truck that is

Max · Jun 21, 2009

Just drop dime on new ones and a harness, ***** only $300 and they'll be brand new. Fans are louder than I thought which isn't an issue for me but others may want to consider this before the swap if you wanna stay quiet.

odie301 · Jun 22, 2009

Anyone know how many CFM the stock e-fans push out?? I looked at using some ones from fleet farm and making my own dual set up, but i want to make sure i have enough cfm so it doesnt get too hot.
My tahoe seems to run really cool anyway, cause i completely removed my stock fan this winter w/o it ever going over 210...plus my heat didn't work worth crap even after i replaced my t stat. with e-fans i could shut em down for the winter.

JennaBear · Jun 22, 2009

We actually just took a ton of pics of an install we did for a customer and will be doing a write up for install along with a write up for supercharger install.

I can't find the pics of my fans that I had right now, but I will post them up when I have a chance to look further.

ELOOSECANNON · Jun 23, 2009

Write up please. I would love to do this on my 04 hoe.

Efans Installed

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