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Keep us posted. I'm thinking about doing the same to my 95 2 door tahoe. Mostly to help with at idle ac performance.I just installed an AlloyWorks 4 core w/fans on my 1997 Tahoe about a month ago. Works great so far. Right now I'm running a 195 degree thermostat with a 200/185 temp switch for the fans. Still haven't figured out how I'm going to wire it up so it also cuts the fan on with the AC. Once the truck warms up and the fans kick on the AC blows cold but from a cold start on a hot day the AC wont blow cold until the fans cut on. Also going to install a high output alternator this holiday weekend.
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Pulling a duel fan set-up of a 06-07, could possibly get as much of the wiring, relays and ECT, seen fan controllers but what is a descent one, also doing the big 3, but going to do more grounds, batt ground to body, to frame and engine, maybe look at fuse box for additional ground spot too. 99 OBS 5.7 inherited from my Dad, he really only drove it to Wisconsin and back to Indiana, always maintained, 275 thousand on the tickerLet me just put this out there, for anyone wanting to do the swap. I have seen this done a lot. IMO, the OE electric fans, are better than the aftermarket electric fans. The OE fans of off, whatever you pull them from, do need to be off of a vehicle that is big enough to have sufficient cooling power. EG, You wouldn't want to put fans from a 4 cylinder vehicle, and expected them to keep your 5.7L 350 cool. The aftermarket fans do work well, but are noisy. Again, you need the correct set up for your truck. I have heard that the fans from a Ford Windstar work well, but they are getting hard to find in the junk yard. Measure your radiator, and find a set that covers as much of the cooling fin's as possible. You definitely want the shroud with the fans. This will pull the air through the fins as needed to work correctly.
I didn't use a fan controller. Each relay, is switched on by the temp switch on the intake, and then, the AC, clutch, and that is on a separate relay, so that the temp switch, can not turn on the AC clutch. It's all in my write up.Pulling a duel fan set-up of a 06-07, could possibly get as much of the wiring, relays and ECT, seen fan controllers but what is a descent one, also doing the big 3, but going to do more grounds, batt ground to body, to frame and engine, maybe look at fuse box for additional ground spot too. 99 OBS 5.7 inherited from my Dad, he really only drove it to Wisconsin and back to Indiana, always maintained, 275 thousand on the ticker
I'll have to read it on the laptop, hard to see on phone lol, thanksI didn't use a fan controller. Each relay, is switched on by the temp switch on the intake, and then, the AC, clutch, and that is on a separate relay, so that the temp switch, can not turn on the AC clutch. It's all in my write up.
Yeah, and it's a lot of pages to read, too. If you have questions, just ask.I'll have to read it on the laptop, hard to see on phone lol, thanks
Thank you, KennyYeah, and it's a lot of pages to read, too. If you have questions, just ask.
wait,.. what??? electric? you??The top fan is the Duramax, I had to trim a small amount off the blades to fit my stock shroud. The fan is massive. The clutch I used is for a 6.0L Trailblazer SS. Running the P59, I have upgraded to the electric clutch now.