Get rid of that flex-fan
you need A big steel fan off a 73 teenerDart with A/C. Then throw away the clutch it comes with and get yourself a HD thermostatic fan clutch. That fan will need a matching shroud, but you can leave the shroud for last if you have a 220* or less cam.
And finally install an anti-cavitation plate on the water pump impeller.
Now you will be able to run a 195* stat, on the hottest days, in a parade even.
You can, of course ignore the advice like so many others, and keep on keeping on.
One thing I can tell you, is the above system with a 43 year old 26" teener A/C rad keeps my 367 at exactly 205*, no mater what. She goes 93 in the 1/8 at 3650 pounds. You can figure out how much power that might be.
I can also tell you that it makes absolutely no difference what my timing is or how lean I run the carb. Or what gear I am running for that matter.How fast or how slow or whatever. It runs exactly 205.
