It's been awhile, I picked up a 67 390 a few months ago and it was fine, I decided to replace the cam and now have an overheating issue as I go down the interstate. If I stay around 60mph it's fine but above that it goes over to the "H" It never gets there but it's not in a comfortable spot. I've moved the timing around, had the radiator flushed, have not replaced the water pump as it looks to be pumping fine watching the coolant move with the radiator cap removed. I cannot figure out what it is. I've toyed with Fords all my life (I'm 59) and this one has me stumped. As I said, I have not replaced the water pump, that is my next move unless I get some more advice here.
Thanks
Thanks