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Thermostat temperature

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  • Thermostat temperature

    When if ever did Studebaker increase engine operating temperature from 160 degrees to 180 degrees? What is best for a V8 , block cast in Dec of 63? This is in my 55 President. Is 180 or 160 best? Any opinions?

  • #2
    Stock thermostat in '55 was 160; later it was 170. I don't think 180 was ever a stock thermostat, but it was available as an optional high temperature unit. 170 thermostats are no longer commonly available however.

    My feeling is that if it runs well and doesn't overheat with a 180 degree thermostat, use it - an engine will be more efficient if it is at a higher temperature (within reason, of course.)


    55 Commander Starlight
    55 Commander Starlight


    • #3
      I would like to find a 135degree thermostat for my Rockne.

      Brad Johnson
      Pine Grove Mills, Pa.
      33 Rockne 10
      51 Commander Starlight
      53 Commander Starlight

      previously: 63 Cruiser, 62 Regal VI, 60 VI convertible, 50 LandCruiser
      "All attempts to 'rise above the issue' are simply an excuse to avoid it profitably." --Dick Gregory

      Brad Johnson, SDC since 1975, ASC since 1990
      Pine Grove Mills, Pa.
      sigpic'33 Rockne 10, '51 Commander Starlight, '53 Commander Starlight "Désirée"


      • #4
        Some manufaturers use different thermostats for different climates.
        The ones I've experienced, used higher temp ones for colder climates. I'm not sure why they did that.


        • #5
          To ward off atmospheric heat leeching, I'd bet.


          Clark in San Diego
          '63 Lark Standard

          Clark in San Diego | '63 Standard (F2) "Barney" |