Lower-temp thermostat? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-25-2004, 08:58 PM   #1
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Default Lower-temp thermostat?

I would like to install a lower temp thermostat to correct engine temps that go up to 220-225 in stop-go driving. Stock on L67Series1 is 195degrees. Will 180degree thermo hurt anything?
Would like to hear if anyone has done this.
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Old 04-25-2004, 08:59 PM   #2
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i haven't done it yet but there are plenty of threads on here i believe and from what i understand it doesn't hurt anything.
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Old 04-25-2004, 09:27 PM   #3
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I would suggest 180. In my experience, though, it doesn't help much with stop and go city type driving if it is warm outside. When it'* cold out, it sits at what ever temp the thermo is. For some others, it seems that their engine always sits at the thermo temp.
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Old 04-25-2004, 09:38 PM   #4
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You should have no issues using a 180*f thermostat. The fact your car is over heating in slow traffic is a concern. When was the last time the coolant was serviced, rad flush etc?
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Old 04-26-2004, 01:15 AM   #5
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Quote:
Originally Posted by jwikoff99
For some others, it seems that their engine always sits at the thermo temp.
I have always found it interesting that my temp guage always sits just below 200 with the stock 195 thermo.
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Old 04-26-2004, 01:16 AM   #6
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I wish mine didn't budge from my 160. It runs so well there.
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Old 04-26-2004, 01:59 AM   #7
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Quote:
Originally Posted by 1994se
I have always found it interesting that my temp guage always sits just below 200 with the stock 195 thermo.
Yep, mine too. And FWIW, my stock 400ci V-8 (also with a 195 T-stat) in my 1969 Executive runs consistently between 205-215 depending on exterior temperature. I've been told those temperatures are perfectly acceptable/normal, so I'm not inclined to change anything out.
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Old 04-26-2004, 02:08 AM   #8
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yeah mine doesnt budge with the stock either.
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