How hot does your small block run?
In my 360 I get 180 operating temp, 190 on very hott, hott days while sitting at long red lights, but I have a backup pusher fan that I click on during those times and it seems to bring it down a bit.
I installed a catch can to avoid embarrasing moments while pulling into shows on very hot days.
I tried purple ice, no improvement.
I tried water wetter, no improvement.
My fan shroud made an improvement and keeps me at 180 at operating temp, but before I had the shroud I was climbing to 190 most of the time and darn near boiling over at long idle situations on very hot days.
I am using a slant six fan shroud and a cheapo auto parts store fan blade.
I wonder if I would get any improvement with a chrysler fan and viscous clutch.