He’s mine 408 3 core Champion, Derale 17 inch Flex fan 10k rpm 2 inch spacer 1 inch from radiator 175 f while driving Idle 180- 185 F but will need to check this once we start hitting warmer temps later in the year. What made a big difference was going from the 1-2 inch spacer as that dropped the temperature @ idle by 10 degrees . My fan was sitting back 2 inches from the radiator and still held a decent piece of cardboard on testing .