Coolant Temp ?
Drifting
Joined: Feb 2005
Posts: 1,960
Likes: 0
From: Issaquah Wa.
The ABSOLUTE First thing you should be doing is LOWERING your temps!!! Dont listen to ANYONE who says otherwise!!
Lets review,........ Cold air = dence air 
dence air = HORSEPOWER, horsepower= GOOD!!!! AND AS WE ALL KNOW GOOD = 
,.....HORIWOOOOOOOOOD! You must learn that just becouse someone has the where with all to have something, doesnt nessaraly mean they have a simple clue as how things actualy work!!! Do yourself a BIG favor, Go to the TRACK (drag or roadracing near you) next spring you will see EVERYTHING and you will learn EVERYTHING
and you will KNOW when your reading another freeken poser!!!
Burning Brakes
Joined: Oct 2006
Posts: 1,006
Likes: 0
From: Cincinnati OH
When stock my temps were around 198 while cruising and sitting still they would creep up to around 225. 
This seemed high to me at first but it is normal. GM used these high temps to control emissions.
This seemed high to me at first but it is normal. GM used these high temps to control emissions.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Le Mans Master
Joined: May 2003
Posts: 6,454
Likes: 3
From: Hells Sister City Phoenix AZ
St. Jude Donor '03
Originally Posted by kevin40zx
When stock my temps were around 198 while cruising and sitting still they would creep up to around 225. This seemed high to me at first but it is normal. GM used these high temps to control emissions.
This seemed high to me at first but it is normal. GM used these high temps to control emissions.
GM engineers know more than I do about these machines.
Administrator
Joined: Mar 2001
Posts: 367,774
Likes: 24,683
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Mine stays around 196 degrees. That said, there is nothing wrong with the temps you are seeing.
Race Director
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
C5 of Year Finalist (performance mods) 2019
2017 C5 of the Year Finalist
2016 C5 of the Year Finalist
2015 C5 of the Year Finalist
On a hot day I see about 190°. Normal cruising and on the highway is stays between 170° and 180°.
The Hypertech 160° thermostat and tuning might have something to do with that though.
The Hypertech 160° thermostat and tuning might have something to do with that though.