C2 1966 427 L36 - Thermostat housing ###s -- Need information , please - NCRS Discussion Boards

C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

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  • Georges C.
    Frequent User
    • June 17, 2013
    • 72

    C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

    The NCRS judging books say that the aluminum thermostat housing on a 1966 427 L36 has the part number 3877660 on the 'foot'. A parts company in NY ( They have always been a reliable dealer) says they housing came both ways and sells one with the numbers on the neck. Anyone know if they are both correct? Thanks, Georges
  • Joe R.
    Extremely Frequent Poster
    • May 31, 2006
    • 1822

    #2
    Re: C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

    Georges,

    Here's a thread you may find helpful:

    https://www.forums.ncrs.org/showthre...hlight=3877660

    Joe

    Comment

    • Georges C.
      Frequent User
      • June 17, 2013
      • 72

      #3
      Re: C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

      Joe,
      Thanks, I read these. Am I correct in assuming that the early 1966 427s - mine is a Jan 21, 1966 car, had a housing with the number on the flange and late were on the neck?. Not sure I ever saw an 'official weigh-in' by the NCRS Director of Judging. I have the latest judging manual and am attempting to bring my car up to NCRS judging standards after 39 years - OFTEN FRUSTRATING!
      Georges

      Comment

      • Michael G.
        Extremely Frequent Poster
        • January 1, 1997
        • 1251

        #4
        Re: C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

        I don't see there's a issue. The NCRS judging guide indicates the 3877660 (embossed on the flange) is the thermostat housing that should be used. That's what I'd have on the car as that is what you'll be held accountable for.........

        Comment

        • Georges C.
          Frequent User
          • June 17, 2013
          • 72

          #5
          Re: C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

          Thanks, Michael, but if one has several copies of the manuals as issued over the years, they have changed with new editions. Some things changed during mid-year production - 1966 seat belts as an example - Just trying to do it right the first time.

          Comment

          • Michael G.
            Extremely Frequent Poster
            • January 1, 1997
            • 1251

            #6
            Re: C2 1966 427 L36 - Thermostat housing ###s -- Need information , please

            Originally posted by georges cottave (58560)
            Thanks, Michael, but if one has several copies of the manuals as issued over the years, they have changed with new editions. Some things changed during mid-year production - 1966 seat belts as an example - Just trying to do it right the first time.
            Understandable Georges. No need to reference anything but the latest judging manual. Forget about the older publications......use the most current info and you'll be fine. Seat belts is only one rolling change item for '66 production cars. Again use the most current judging manual. The process is challenging, don't make more difficult than it needs to be.
            Last edited by Michael G.; March 6, 2015, 05:48 PM.

            Comment

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