C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

L98 running temp

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Old Oct 15, 2013 | 09:52 PM
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Default L98 running temp

Have an 87 coupe that I've had a couple years, did a new radiator this past spring and put new fluid in and the car had a 160 degree thermostat in it and now it runs from 160-170 all the time, unless it's idling of course. Is this too low of a temperature to operate at? Prior to the new radiator it ran like 170-185 all the time. I know these engines are safe up to the 240 region and I have had mine up in the 230s before and that doesn't concern me, just want to make sure that I won't be experiencing any issues. I have driven it on 4 200+ mile trips with the new radiator and it seems ok, got about 23 mpg mixed highway/local driving, with me, my girlfriend and our bags, running through the Harriman park area of New York (hilly). I like that it runs cool but when does it begin to effect combustion etc?
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Old Oct 15, 2013 | 10:12 PM
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Originally Posted by tron4734
now it runs from 160-170 all the time,
Is this too low of a temperature to operate at?
Opinions will vary ,You decide

Read
http://temp.corvetteforum.net/c4/vader86/160.html

http://www.corvetteactioncenter.com/...-vs-180-a.html
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Old Oct 15, 2013 | 10:22 PM
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I guess I gotta keep an eye on the oil temp, if it's 185 or higher I'm content. Thanks for the info, I appreciate it. Unfortunately I'm getting ready to winterize my baby so it won't matter soon.
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Old Oct 15, 2013 | 11:22 PM
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Originally Posted by tron4734
Have an 87 coupe that I've had a couple years, did a new radiator this past spring and put new fluid in and the car had a 160 degree thermostat in it and now it runs from 160-170 all the time, unless it's idling of course. Is this too low of a temperature to operate at? Prior to the new radiator it ran like 170-185 all the time. I know these engines are safe up to the 240 region and I have had mine up in the 230s before and that doesn't concern me, just want to make sure that I won't be experiencing any issues. I have driven it on 4 200+ mile trips with the new radiator and it seems ok, got about 23 mpg mixed highway/local driving, with me, my girlfriend and our bags, running through the Harriman park area of New York (hilly). I like that it runs cool but when does it begin to effect combustion etc?
a 180 thermostat is about perfect. You would need a custom chip or fan switch to get the fans to come on correctly though.
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