70 BB thermo housing - NCRS Discussion Boards

70 BB thermo housing

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  • Joe B.
    Expired
    • January 1, 2003
    • 14

    70 BB thermo housing

    I have a 1970 LS-5 w/AC that has a rough finish thermostat housing on it. I also have a spare housing that is marked GM 3877660 on the neck? What is the correct application?
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: 70 BB thermo housing

    joe-----

    Any thermostat housing which has no part number embossed anywhere on it is NOT correct. The 3877660 is the correct housing. However, the configuration of it changed a bit over the years of its availability. The correct version will have small casting "wells" on either side of the base section.
    In Appreciation of John Hinckley

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