I was driving my 65 with a 327/350hp and it was about 60 degrees outside, and about 45min on the highway the temp was just above 180. I'm thinking when the weather gets hot it's going to run hotter. The motor is pretty new and I don't know what thermostat is in it. But I have a 434ci motor in my 57 and the temp will sit at about 150. Is this normal for the 327? And I'm thinking of putting a 165 thermostat in it. Any thoughts?

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