C5 Forced Induction/Nitrous C5 Corvette Turbochargers, Superchargers, Centrifugal, Twin Screw & Roots Blowers, Twin Turbo Kits, Intercoolers, Wet & Dry Nitrous Injection, Meth
Sponsored by:
Sponsored by:

Coolant Temps in Summer

Thread Tools
 
Search this Thread
 
Old Jul 29, 2025 | 01:46 PM
  #1  
AJ Powers's Avatar
AJ Powers
Thread Starter
Instructor
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 2007
Posts: 167
Likes: 18
From: South East USA
Default Coolant Temps in Summer

What kind of coolant temps do you guys get in the summer (95+ degrees), stop and go traffic, and AC on? My car normally runs around 190. In those conditions I'm seeing 230. Oil temp a little higher too, but not as much difference as coolant. I have cleaned the intercooler, condenser, and radiator already,

TIA

AJ
Reply
Old Aug 8, 2025 | 08:22 AM
  #2  
Harleyyac's Avatar
Harleyyac
Instructor
Supporting Gold
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Sep 2019
Posts: 144
Likes: 26
From: NNJ
Default

There are sooo many threads on this. The short answer is 230 is ok.
Reply
Old Aug 8, 2025 | 09:35 AM
  #3  
ArcticVert's Avatar
ArcticVert
Advanced
All Eyes On Me
 
Joined: Jan 2024
Posts: 80
Likes: 34
From: Louisiana
Default

I see 225 F coolant and 220 F oil regularly if I'm in stop and go city areas. Once I get moving 60+ MPH it'll drop to 195 or 200 F pretty quick.
Reply
Old Nov 3, 2025 | 11:15 PM
  #4  
Brad2025's Avatar
Brad2025
3rd Gear
 
Joined: Nov 2025
Posts: 3
Likes: 0
Default

In those conditions, coolant temps can definitely rise. 230°F is higher than ideal, but not uncommon in stop-and-go traffic with AC on. You might want to check your fans and make sure everything is flowing well.
Reply
Old Nov 12, 2025 | 08:41 AM
  #5  
FourG63 97GST's Avatar
FourG63 97GST
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 3
 
Joined: Mar 2006
Posts: 2,754
Likes: 380
From: South Florida FL
Default

under those conditions, I use to see similar temps. and it would keeps climbing and running away into the 230s
This summer I decided to finally vent the hood, and it dropped the temps over 20*, and actually lower the temps when i'm moving.
With the vent, it'll aim to maintain 178*, at worst case, it may creep to about 206 in high traffic situations.
Notice I have no shrouding, and in south Florida, so there's room to improve on my stock cooling system. I just started with the vent, path of least resistance


Reply
Old Nov 12, 2025 | 08:48 AM
  #6  
Harleyyac's Avatar
Harleyyac
Instructor
Supporting Gold
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Sep 2019
Posts: 144
Likes: 26
From: NNJ
Default Another observation after SuperCharging

Originally Posted by FourG63 97GST
under those conditions, I use to see similar temps. and it would keeps climbing and running away into the 230s
This summer I decided to finally vent the hood, and it dropped the temps over 20*, and actually lower the temps when i'm moving.
With the vent, it'll aim to maintain 178*, at worst case, it may creep to about 206 in high traffic situations.
Notice I have no shrouding, and in south Florida, so there's room to improve on my stock cooling system. I just started with the vent, path of least resistance

I had my 03 supercharger installed this past week and now after having new plumbing my car stays @ 187. Days lol have to wait for warmer temps and stop and go traffics for the real test.
thx
Reply
Old Nov 27, 2025 | 08:08 PM
  #7  
WIFESC5's Avatar
WIFESC5
Instructor
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Nov 2017
Posts: 125
Likes: 82
From: Gilbert AZ
Default

Pretty much everyone said. You also want to ensure your radiator and condenser is cleaned out properly. Check to see if your air dam is intact as well.
Reply

Get notified of new replies

To Coolant Temps in Summer





All times are GMT -4. The time now is 04:49 PM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE