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Fan Switch VS LT1??

Old Apr 30, 2007 | 12:22 AM
  #1  
Air_Adam's Avatar
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Fan Switch VS LT1??

Hey guys, question for you...

my '83 Z28's old 4bbl 350 has a 200-180 degree fan switch (the one that goes into the pass side head) on it that runs the factory electric fan, and someone I know wants to try this switch in his LT1 swap car - will this switch work with the LT1 setup, or will it cause problems? I think the car is run by an LT1 car's computer as well, incase that makes a difference? Not sure on that though...?
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Old Apr 30, 2007 | 07:51 AM
  #2  
ljnowell's Avatar
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Re: Fan Switch VS LT1??

Originally Posted by Air_Adam
Hey guys, question for you...

my '83 Z28's old 4bbl 350 has a 200-180 degree fan switch (the one that goes into the pass side head) on it that runs the factory electric fan, and someone I know wants to try this switch in his LT1 swap car - will this switch work with the LT1 setup, or will it cause problems? I think the car is run by an LT1 car's computer as well, incase that makes a difference? Not sure on that though...?

The LT1 car should have the fans controlled by the PCM, so no, it would not work. The switch that is in your car is controlling ground for the fan relay, which has power when the ignition is on.
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Old May 1, 2007 | 07:28 PM
  #3  
Air_Adam's Avatar
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Fan Switch VS LT1??

So how then would one change the temperature the fans turn on at? Computer tuning?
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Old May 1, 2007 | 10:55 PM
  #4  
84z28350's Avatar
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
Re: Fan Switch VS LT1??

Yes, he would need to do some ECM tuning to change the fans turn on temps.
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