440 overheating at idle

I hate that aftermarket stuff. I ran a stock A-body 22 A/C radiator and shroud and never ran over 180.
I agree on stock stuff. Not much stock on my hardtop but try to keep my Ragtop as original as I can but not going overboard obsessive.Still have Eddy heads and RPM intake. Old stuff in boxes.

RPM2.jpeg