'66 Valiant Running Hotter than Expected

He also posted that turning on the defrost helps a bit. That's an indicator that the radiator may need help.

It’s pretty much where I am to Rusty. The duster doesn’t have any problem but recall the duster I actually put a 73 and up radiator support and the big 26 inch radiator. That could be the main reason why that one doesn’t have a problem. This is just a narrow 22 inch radiator, that’s all they did in the early days even with air conditioning I was just hopeful that the aluminum heads and having Bob do a four core would make a difference, but seems like I’m wrong