So a few days ago, I took my camaro on a road trip (300 miles) on my way back the temp started to get hotter, up to the point of touching the redline. I pulled over at a gas station, popped the hood and I could hear the water boil. I waited an hour and poured some water in the radiator, after that I drove it home without anymore overheating problems. But the next day I drove it for about 10 mins and it got hot again. I just replaced the thermostat, but itsstill getting hot after a few minutes. I have my fans bypassed and they work just fine. Could this be my water pump? FYI theres no visible coolant leaks.

 

Have you checked the level again?

 

Four possibilities for overheating without it being the water pump:

1) The thermostat is the incorrect type for the LT1's reverse flow cooling system. It is not the same one as the regular small block.

2) Air trapped in the system from incorrect bleeding procedure. It's easy to do this and you might have to do it a few times. Here is a link to ShoeBox's page...look at the drain and refill section: http://shbox.com/1/4th_gen_tech2.html#radflush

3) Missing air dam. This directs cooling air into the radiator and if it's missing the car will overheat.

4) Partially blocked radiator. This can be either internal or external. The external one is simple...the F-body gets it's cooling air from underneath. Take a look under the car at where the air is directed up towards the radiator. Any debris (plastic bags are pretty common) will reduce airflow to the radiator.

Internal is a little tougher to fix. To diagnose, run the car to operating temp and feel the surface of the radiator. You'll have to unplug the fans and reach through to reach the radiator. The radiator should be about the same temp top to bottom. It will probably be cooler as you go across but vertically it should be about the same..if you get me meaning. If you find it considerably cooler at the bottom that the top, it's probably blocked and you'll have to flushed or replaced.

Good luck.

 

Yes, I checked the level and there's definetely water in it. It overheats running or even just at idle (parked) could this be a blown head gasket or cracked block? there's no sign of white smoke, and I already flushed the radiator. I forgot to mention when I filled the radiator and put the new stat, I run my car at idle for a few mins when I heard a loud noise, almost like a snap sound, and the hose the connects from the stat housing to the radiator moved, like someone hit it, and that was it.

 

You need to properly bleed the air out of the system. Shoebox describes the procedure here: http://shbox.com/1/4th_gen_tech2.html#radflush

 

LOL covered in post #3

 

Lets make sure he sees it this time..LOL....Sounds like you need to bleed the air out of the cooling system...