Has anyone used a 1981-1982 Corvette cooling fan switch? I've heard It's supposed to kick on at about 200F which keeps the engine at 210F at all times. (instead of 220+ that the stock fan kicks on)

 

actually that switch turns on at around 230*IIRC,it is for
the auxillary fan as those vettes have a belt drive main
fan-that auxillary fan is found on certain '79-'82 vettes
and is the same fan used on the "x"cars-chevy citation
etc.
the fan switch used on '84 up vettes is probably the
same as f-bod switch.

 

I know for fact 1981, and 1982 Corvettes use a temp switch that kicks on at 200F, and off at 195F. It is a very common swap for Renix Jeep Cherokee's.

 

if thats true, those switches would be about right for use
with 180*thermostat