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stock thermostat temps??

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Old Apr 23, 2005 | 05:41 PM
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Default stock thermostat temps??

What temp is the Stock Thermostat???
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Old Apr 23, 2005 | 06:42 PM
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210*!!!!!!!!!
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Old Apr 23, 2005 | 07:25 PM
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No, the stock thermostat pivots about 194F. 210F is
where GM's bright boys decided your fans should kick
on. The "rating" of the stock 'stat is somewhere about
180F.
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Old Apr 23, 2005 | 08:08 PM
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Mine pops at about 190
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Old Apr 23, 2005 | 09:17 PM
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so what should fan settings be for that???
I figure since I Have HPtuners I could fine tune that a little till I buy a 160 stat


BTW....anybody in KC Area.. I have it for 2000/2001 camaro's/bird's incase anybody is close to here and wants some budget basic tuning done(wideband soon)
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Old Apr 23, 2005 | 11:46 PM
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I think the stock thermostat opens at about 177-184.
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Old Apr 24, 2005 | 12:13 AM
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If I'm not mistaken the stock temp. on the thermostat is 195 degrees. That is why they sell aftermarket 180 and 160 degree therms. (I think)
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Old Apr 24, 2005 | 12:23 AM
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could somebody do a pot boil water test on one and tell me exactly when theirs opens...LOL instead of all this "I Think" information...
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Old Apr 24, 2005 | 12:44 AM
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https://ls1tech.com/forums/generation-iii-internal-engine/105763-question-about-running-temperature.html
https://ls1tech.com/forums/generation-iii-external-engine/105145-does-anybody-160f-tstat-really-run-160f.html

Last edited by ACW; Apr 25, 2005 at 09:21 PM.
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Old Apr 24, 2005 | 01:01 AM
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Optimized stock 195 t-stat fan settings -
Fan 1 on/off - 209/200
Fan 2 on off - 219/210
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Old Apr 24, 2005 | 06:10 AM
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Glad that got cleared up. Once again I had a fraction of the answer right, to the wrong question. I really need to get me a little spec sheet so I quit doing this!!!
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Old Sep 16, 2015 | 08:37 PM
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The Standt stock replacement #14948 is 186°F

http://ww2.stant.com/modules/partLoc...m.cfm?id=14948
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Old Sep 16, 2015 | 09:30 PM
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And to clarify on a TEN year old thread. All fan temps listed above are wrong, except for the optimized for 195 bit which he isnt claiming are stock numbers.
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Old Sep 17, 2015 | 12:23 AM
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From: Schiller Park, IL Member: #317
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Wow, welcome back to 2005.

The stock t-stats were stamped on the bottom as 86° (C), which equals 186.8°F.

Stock fan settings are as follows:

Low speed on/off: 227°/218°F
High speed on/off: 235°/228°F
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Old Sep 17, 2015 | 11:49 AM
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Glad we got that all cleared up
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Old Oct 8, 2015 | 07:01 PM
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I too had read stockers were 187F --- going to set my PWM controller at 194F.
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Old Oct 13, 2015 | 12:05 PM
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There's rated temp and there's what it does. Look at
your ECT when coasting at high speed and that's the
effective pivot temp. I recommend your low speed
fans be on a couple of degrees below, and high speed
a couple above this what-it-does.

My experience: stock ("180") 194-195F
Hype-tech "160" 175-177F

You want the thermostat to be in charge because
it responds fastest. Running fans late increases the
water jacket temperature swing and you have to
deal with that, either fine tuning the ECT spark
adder tables or leaving something on the table for
that variability. Run your fans such that the ECT
never breaks out more than a couple of degrees
above pivot temp, radiator airflow surplus is where
it's at. Of course a fatter core would help too.
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Old Oct 13, 2015 | 01:46 PM
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From: Schiller Park, IL Member: #317
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I find the stock 86°C (186.8°F) rating to generally be accurate, as I've often seen ECT temp on my scanner to be as low as 192-194°F, post warm-up, at steady cruise in cool ambient conditions. You won't ever get the ECT to exactly equal the t-stat temp, it will always be a bit warmer but should be pretty close assuming you have proper airflow and cooling system capacity.
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