Exactly...My car is stock and runs a little hotter than that.. Your just fine. 
Engine Temperature Concern!
Thread Starter
Racer
Joined: Jan 2009
Posts: 286
Likes: 0
From: Madison MS
Engine Temperature Concern!
I have already posted a couple of posts on this, but now I did some testing and I am going to post my results for everyone to look at and give me their opinions. I am concerned about my engine running hot after my headers (coated) installation and tune. It seemed that my car was running a little hot last week. Anyway here are the results from todays testing (40 degrees outside) I drove the car for 30 minutes at low speeds, 30-60mph then came home and let idle in drive for 10 minutes. Ok, so with the car running at the low speeds heres what I got
Do i have anything to worry about. is it running a little hot? Will it run even hotter in summer when it gets to 90-100 degrees outside?
Please give feedback.
Thanks
Neil
- Oil Temp 210, Coolant 207, Trans Fluid 147
- Oil temp 212, Coolant 212-217 back and forth but never over 217, trans fluid 176
Do i have anything to worry about. is it running a little hot? Will it run even hotter in summer when it gets to 90-100 degrees outside?
Please give feedback.
Thanks
Neil
Pro
Joined: Apr 2006
Posts: 647
Likes: 22
From: Norwalk CT and Boynton Beach FL
I have a bone stock 2003 Vert. I'm taking my car oout today (been covered and garaged for the last 2 months) and I will check my numbers --- But I think they will come in around what you are reading. I think you can lower them with a cooler (180 deg) thermostat and reprogramming the fans to come on at 180 deg ---. I don'tknow how to do this, but maybe some Forum member will chime in with pictures on how to do this. I thinik I'd like to have my engine running aroung 180-190 deg also.
Drifting
Joined: May 2008
Posts: 1,621
Likes: 2
From: Petal Ms
St. Jude Donor '08-'11
Yours is running cooler than mine and mine has a 180 t-stat. To make the fans come on sooner you will have to have the tuner to do that. They say the ls2 makes best hp around 200 degrees.
Drifting
Joined: Apr 2006
Posts: 1,276
Likes: 5
From: Ambler Pa.
temps....
I have already posted a couple of posts on this, but now I did some testing and I am going to post my results for everyone to look at and give me their opinions. I am concerned about my engine running hot after my headers (coated) installation and tune. It seemed that my car was running a little hot last week. Anyway here are the results from todays testing (40 degrees outside) I drove the car for 30 minutes at low speeds, 30-60mph then came home and let idle in drive for 10 minutes. Ok, so with the car running at the low speeds heres what I got
Do i have anything to worry about. is it running a little hot? Will it run even hotter in summer when it gets to 90-100 degrees outside?
Please give feedback.
Thanks
Neil
- Oil Temp 210, Coolant 207, Trans Fluid 147
- Oil temp 212, Coolant 212-217 back and forth but never over 217, trans fluid 176
Do i have anything to worry about. is it running a little hot? Will it run even hotter in summer when it gets to 90-100 degrees outside?
Please give feedback.
Thanks
Neil
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
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
Safety Car
Joined: Nov 2007
Posts: 4,433
Likes: 873
From: Bay Area CA
My stock 2008 LS3 runs the following temps on a typical 60 - 70 degree day.
Coolant temp on freeway: 192 - 196 degrees.
Coolant temp in city or stop and go traffic : 198 - 220 fan kicks in at 220 - 225 and the temps drop to 194 - 196. This cycle continues in city driving.
The coolant temps continue to run at the above ranges no matter what the outside temp is. The cooling temps stay at a very controlled range.
Your oil temps of 212 are very much in the normal range. Of course more aggressive driving will perk those numbers up. It would be interesting to note how much the engine oil cooler reduces temps for the Z51?
Coolant temp on freeway: 192 - 196 degrees.
Coolant temp in city or stop and go traffic : 198 - 220 fan kicks in at 220 - 225 and the temps drop to 194 - 196. This cycle continues in city driving.
The coolant temps continue to run at the above ranges no matter what the outside temp is. The cooling temps stay at a very controlled range.
Your oil temps of 212 are very much in the normal range. Of course more aggressive driving will perk those numbers up. It would be interesting to note how much the engine oil cooler reduces temps for the Z51?
Last edited by Mike's LS3; Feb 15, 2009 at 05:01 PM.
