69 Dart cooling questions

If it were mine I'd install a 180 fail safe stat and purchase the Mopar Perf viscous fan from Mancini or Summitt. That is what took care of my overheating problem. It pulls lots of air even on those 100+ days here. You need the 180 to keep the water in the radiator longer to allow it to cool. Also throw in a bottle of Wetter Water. It helped my puller rig to run cooler.