heating issues when idling 340 73 duster

Also 1/2 the fan blade needs to be in the shroud and other half out for proper flow.
This makes no sense- the fan is pulling air thru the radiator. Unless the shroud is day 20” in diameter and the fan is a lot smaller like 16” in diameter. The shroud prevents the fan from sucking air off the tips of the blades - an easier path than thru the radiator. The shroud should be close to the fan but having it sticking out does nothing.