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Discussion in 'The Hokey Ass Message Board' started by 64impala, Apr 21, 2013.

  1. 64impala
    Joined: Sep 14, 2012
    Posts: 79


    Just curious, besides allowing the engine cooling flow to start from the engine through the radiator, what other differences, if any, would there be in running a 165 degree thermostat versus a 185 thermostat?

    Engine: 327 cui
  2. 3quarter32
    Joined: Dec 10, 2010
    Posts: 437


    I had an engine that called for a 185. I thought I would be smart and put in a 165. Guess what, it ran hotter because the water didn't stay in the radiator long enough to cool down. This is where our summer temps were in the 90s and 100s. Thats all I know about them.
  3. Engine man
    Joined: Jan 30, 2011
    Posts: 3,480

    Engine man
    from Wisconsin

    On non electronically controlled engines it doesn't matter much but electronically controlled engines need the proper temperature for the injection systems to work properly. The computer sends more fuel to compensate for a cold engine.
  4. 40FordGuy
    Joined: Mar 24, 2008
    Posts: 2,907


    What Engine Man said !!!


  5. blue 49
    Joined: Dec 24, 2006
    Posts: 1,626

    blue 49
    from Iowa

    I read that your oil will sludge up more if you don't run at least 180* on the coolant temp.


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