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Radiator swap Aluminum to brass.

Aces, I will confirm your thoughts: my 91 6.2L half ton does have a brass radiator. 99 percent certain the older ones did to.

I never have researched what they are size wise, and capacity wise compared to the 6.5L turbo brass radiator.
 
All copper is good if you have a lot of surface area and a lot of airflow constantly to disipate the heat, but then your fan would have to be engaged a lot more. So not only does copper cost more, it requires more space and more weight unless you have more airflow, like a direct drive fan that most old big engines had.
Click to expand...



Or just get a Kennedy fan clutch...
 
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