don't know about anyone here but in south seattle temps are in the 90s
Had my 92 out today and at one time the digital gauge read 224 ive seen it go up to 215 and started to get worried but 224 got a bit scary so pulled off the road for a kool down....BTW I just had the coolant changed.. what was the highest yours has been??

PS >>>>>>>>High temp was in traffic then calmed down when moving, I usally ran 199-201

 

I don't remember how hot the LT1 got. I do know that setting timing by ear is a bad idea. One time when it was carbed I tried that and made the factory exhaust manifolds glow red.

 

Was that in traffic if yes it is normal. I believe the fans go on at 228 degrees. You can put the a/c on which will turn on the fans. If that temp is on the highway it's too warm. You can check in between your a/c condenser and radiator for road debris or plastic bags. Make sure your front air dam is on the car.

 

Your fans don't go on until the temp reaches 228. If you want your car to run cooler, you will have to change the thermostat and have your computer re-programed to turn on the fans earlier.

 

Ambient temp reads a little hot near the road surface, but I'm in Redmond and was out cruising earlier. 45mph Cruising and I sit at 196-198 with AC running. Hits about 210 in traffic. Car is tuned to turn on fan at 194. This is in my 96' LT4





Before I swapped out the old radiator (shown below), I saw the temp get as high as 245 in traffic.

 

You don't need to get nervous until the temperature goes over 250°. If that happens then you need to fix something.

 

224°F is NOT that hot.
As mentioned earlier, your cooling fans don't even come on until the temps are approx. 228°F.

It gets over 100°F here in Missouri, and my car will sit and idle all day long if I wanted too at that temp.

When in stop and go traffic, there isn't any airflow across the radiator fins, so the car will run hotter than when moving.
But the car was designed to handle these temps.
Over 125,000 miles on my '96 with the factory cooling system and no issues.

With a well maintained cooling system with proper coolant mix, pressure cap and thermostat, the coolant won't boil until close to 260°F

Read the "Sticky" located at the top of the page:
https://www.corvetteforum.com/forums...peratures.html

 

Like Rolla said, your car is designed to run in the 220s, make sure your radiator is free of debris and relax.

 

Mine is a bit older than yours (84) and when I first got it, the temp gauge going above 210 scared the **** out of me.

Turns out, my Vette runs just fine in hot traffic and the fan reliably comes on at around 225.

Now I drive the car on the hottest summer days without worry.

 

Yes the LT1/LT4 is designed to run in the 200-230*F range. This seems hot to many people but it's just how the engineers designed it, probably for emissions reasons, and maybe to steam off any moisture in the oil for seldom-driven or short-trip cars.

I'm OK hitting 220 once in a while, above which I will turn on the AC which triggers the fans (under 35mph).

I recently did a full cooling flush and installed wire mesh screening over the intake area above the front dam to keep debris off the condenser/radiator. A 1-hour, $10 project and works great. My LT1 is consistently at 194*F (digital gauge) at highway speeds regardless of ambient temp. The air dam itself is a very important part of the cooling system. Make sure it's strong enough (and not too tweaked) to take the wind pressure at high speeds and consistently pull in air.

My only concern about the design is, if the cooling system loses pressure, the 50/50 coolant will boil instantly at 230*F. If there's no safe place to pull over and shut it down, this could cause catastrophic failure. So there is good argument to modify the system to run cooler, although I haven't done so. I just monitor the gauges closely.