I have a standard XD V8 3 core in my ute.
Straight gas 460.
Factory belt driven fan and shroud.
Usually no more than 1/4
Hot days sees it rise but driving gets it down again.
The only thing I have done wrong is put too large a pump pulley on it. I will change it when the weather warms again.
Water pump should run 1:1 to 1.5:1 on the motor unless its a race engine. Max pump speed about 7500rpm for extended periods (occasional blip OK).
Good site on cooling bearing in mind they make and sell pumps