[Captkaos]

What does the autometer guage say the temp maxes out to? What kind of thermostat is in it? I am running a 180 in my 454 and I had no shroud and a 3 flue radiator, it never got above 200 in 105 summer temp.

What is your timing set to? It could be the motor is out of tune.
That will make a motor run hot. Get a clutch fan.
As for a cam, what areyou wanting to replace it for? If you are looking for economy out of a 454, you don't want to go bigger, especially with a 4x4.