Overheating Big Block

[mikes67]

I have a similar problem but what I did was to drill and tap the back of the intake and ran braided hoses to my thermostat housing it runs a lot cooler. I had a guy at a car show tell me to put "3" drops of Ivory Dish Washing Soap in the radiator my temp dropped about 3 degrees. One thing you need to remember is you have a big block and they are known for running warm especially if you have a large cam and other goodies. To me 190 to 205 is pretty cool. Good luck