Engine seems to run too cool
Thread Starter
Le Mans Master
Joined: Jan 2000
Posts: 8,721
Likes: 108
From: Canada
Engine seems to run too cool
Ever since I put an original '68 L-88 hood on the engine runs very cool. The temp guage is working as we have measured the coolant temp. It stays in the 150 - 160 range. It was in the high '80s here today and it still did not get over this temp. I am also not getting near as much heat coming into the cabin as well.
Team Owner
Joined: Dec 1999
Posts: 26,555
Likes: 257
From: Florida
2021 C2 of the Year Finalist - Modified
C2 of the Year Finalist - Modified 2020
C2 of Year Finalist (performance mods) 2019
St. Jude Donor '03 thru '26
Re: Engine seems to run too cool (Alwyn678)
I have almost the same situation. Installed new "supercool" water pump and 180 thermostadt which reduced the temp from 209 to 170. :confused:
Melting Slicks
Joined: Oct 2002
Posts: 2,865
Likes: 1
From: I may be getting old but I refuse to grow up
Re: Engine seems to run too cool (biltogo)
t-stat stuck open? :confused:
I had a Tstat stick open on a Buick V6 and it wouldn't run over 150-160
Steve :steering:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Sep 2002
Posts: 2,783
Likes: 2
From: Engineers do it better.
Re: Engine seems to run too cool (gdh)
Last year I had the same problem. Car would not get warmer than 160 on the hottest days even under hard driving. Car came with a 160 stat, which I found stuck open. Replaced it with another one, 2 days later that was stuck open. Replaced it with 180 one, 2 weeks later that was stuck open too :mad
Decided to ask around and check dealer recommended parts. Turns out GM recommends 195 degree stat. I had nothing to loose, so I put in a 195 stat. Ever since, the car runs AT 195 degrees. No more, no less. No matter what the conditions are. Seriously.
Here is my opnion ( but I am no expert by any means ): When I had the 160, the car would try to operate at normal operating range (195) and the stat would fail. Same thing with 180. However, when 195 was installed, the car maintained that temp. There was much better performance as well. Noticable difference.
Try a 195 stat (make sure it's a failsafe unit ---crappytire has it for around $10). It worth a try......worked for me. Are you guys :sleep: yet?? :lol:
Good luck
Decided to ask around and check dealer recommended parts. Turns out GM recommends 195 degree stat. I had nothing to loose, so I put in a 195 stat. Ever since, the car runs AT 195 degrees. No more, no less. No matter what the conditions are. Seriously.
Here is my opnion ( but I am no expert by any means ): When I had the 160, the car would try to operate at normal operating range (195) and the stat would fail. Same thing with 180. However, when 195 was installed, the car maintained that temp. There was much better performance as well. Noticable difference.
Try a 195 stat (make sure it's a failsafe unit ---crappytire has it for around $10). It worth a try......worked for me. Are you guys :sleep: yet?? :lol:
Good luck