When I was flushing the cooling system, I kept an eye on the temp as I had to run the motor for 10 min intervals. I did this 5 times and the heads never read above 190 degrees. After I took it out the heads were reading 215 degrees. I read the temps with my Raytek lazer temp gun. I know there are some tolerances or incorrect readings for lazers but it was reading the same as my engine temp gauge. I just want to be safe with the heat! I dont want to be putting head gaskets on any time soon. Also, I have to have the car ready by Aug 24 cause thats when I go to the Texas Motor Plex and its gonna be a HOT day!