My Dad has a '75 Fury with the 360. Compared to the 318 in his '72 Charger, it ran hotter. I'm guessing the radiator even when new barely could keep the engine at proper operating temperature. Just my observation.
I'd suspect a scaled up radiator if it overheats or gets hot at low speeds and stay relatively cool at highway speeds. Had those symptoms with a '92 Acclaim 2.5L I had - the gauge would show normal at idle and climb to 3/4 at highway speeds. A new radiator cured it.
I'd suspect a scaled up radiator if it overheats or gets hot at low speeds and stay relatively cool at highway speeds. Had those symptoms with a '92 Acclaim 2.5L I had - the gauge would show normal at idle and climb to 3/4 at highway speeds. A new radiator cured it.