Your problem isnt the items in front of the radiator. You need to look at the cooling system itself. Why is it running hot? This combination has been pulling loads for many years without overheating.
Whens the last time the system was flushed?
Whats the anti freeze percentage?
Has the system been pressure checked?
Has the cap been pressure checked?
Is the water pump operating correctly?
Is the Fan operating correctly?
Is the Transmission shifting correctly, not slipping and creating excess heat?
Whats the mileage on the engine, is it old and ready for a rebuild?
Some things to try are:
Water Wetter. Great stuff, I use it in my rockcrawlers religously, after idling all day long at about 15-20 mph they never overheat. On my tow rig (1996 7.4 Suburban) I saw a 15 deg decrease in temps.
An electric fan, this will reduce drag on the engine.
If the engine isnt to old Synthetic oil to reduce friction.
Whens the last time the system was flushed?
Whats the anti freeze percentage?
Has the system been pressure checked?
Has the cap been pressure checked?
Is the water pump operating correctly?
Is the Fan operating correctly?
Is the Transmission shifting correctly, not slipping and creating excess heat?
Whats the mileage on the engine, is it old and ready for a rebuild?
Some things to try are:
Water Wetter. Great stuff, I use it in my rockcrawlers religously, after idling all day long at about 15-20 mph they never overheat. On my tow rig (1996 7.4 Suburban) I saw a 15 deg decrease in temps.
An electric fan, this will reduce drag on the engine.
If the engine isnt to old Synthetic oil to reduce friction.