If you are not running a fan shroud you should be. Then you need to determine if your engine is really getting hot. If it is then start figuring out how to clean the passages in the block. Clean radiator, clean block, good water pump and a proper fan and shroud you should be good to go.
I’m sure others will have some different ideas for you.

Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
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USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)