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What is the correct thermostat?

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Old Dec 24, 2002 | 07:34 AM
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Default What is the correct thermostat?

I see that people, on the forum, change the thermostats in their car. I see vendors advertise different temp ranges. What's the real answer? In the summer months, if I get caught in bumper to bumper traffic, I see temps of 220 degrees. What's the fix? :crazy: :confused:
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Old Dec 24, 2002 | 08:44 AM
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Default Re: What is the correct thermostat? (vetteguy98)

Lower temp thermostats will not lower temps while sitting in bumper to bumper traffic on a hot day. You can leave your stock thermo in the car and purchase either a Hypertech unit or LS1 Edit and program your fans to come on earlier. In the past I had done that with a Hypertech, I set the fans to come on at 194. No matter what I did with the car it NEVER went over 194.

vetterdstr :cheers:
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Old Dec 24, 2002 | 10:18 AM
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Default Re: What is the correct thermostat? (vetterdstr)

:iagree:
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Old Dec 24, 2002 | 10:28 AM
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Default Re: What is the correct thermostat? (vetteguy98)

I have a 99 and have been driving with the a/c on..My temp has been around 200 in traffic, but if I turn the a/c off it goes up to 228. I guess only one fan runs with the a/c off and two when the a/c is on. Is this right? :nonod:
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Old Dec 24, 2002 | 11:13 AM
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Default Re: What is the correct thermostat? (9vette9)

I guess only one fan runs with the a/c off and two when the a/c is on. Is this right? :nonod:
Yes that is right and there is a little more to it than that but for this conversation that is all you really need to understand.

With the above computer changes you can have both fans turn on earlier keeping the engine cooler. For a stock car it is ok if the car runs 230 as it was designed to do so.

For a High HP S/C car like mine, lower temps are better for the application.

So what I am trying to say is... your car is acting normal and there is really no reason to do any computer mods to the cooling temps.

vetterdstr :cheers:
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Old Dec 24, 2002 | 12:15 PM
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Default Re: What is the correct thermostat? (vetterdstr)

I'm running the 160 stat with the Hypertech PP3. The average expected coolant temperature for me is 178 now which is pretty consistent. I was seeing 194 or more likely over 200 before the install. It now does go above 178 sporaticaly, but I rarely see near 200 for very long. I think this helps keep the footwells and tunnel cooler, but I could be wrong. It might be the placebo effect. I've been running this way for over a year and a half now. I still get plenty of heat in the Philadelphia freezing cold too. Just yesterday, I ran with the targa roof out and the heat blasting in 30 degree cold windy dry weather. No complaints.
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