68 Big Block fan? - NCRS Discussion Boards

68 Big Block fan?

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  • Steve W.
    Expired
    • March 1, 2002
    • 78

    68 Big Block fan?

    I've searched, and I have to think there are threads on this but I couldn't find any. I have what I believe is an original 5 blade fan, (flat rivets, 5 rivets per blade, "FRONT" and "H" on the blade hub). Why do some have "66" and some not? thanks for any input. Steve
  • Henry J.
    Very Frequent User
    • November 1, 1999
    • 457

    #2
    Re: 68 Big Block fan?

    Steve:

    Your fan should be GM part number 3888366, which was manufactured by Hayes-Albion. The "H" signifies Hayes-Albion. It should have a diameter of 17.5 inches and a blade pitch of 2.25 inches.

    This fan is Hayes-Albion part number 156632. The "66" is thought to be the middle two digits of the Hayes-Albion part number.

    My 3888366 fan also has a "W" stamped on the backside of one arm of the hub. The significance of the "W" appears to be unknown.

    Comment

    • Joe L.
      Beyond Control Poster
      • February 1, 1988
      • 43202

      #3
      Re: 68 Big Block fan?

      Originally posted by Steve Wallach (37552)
      I've searched, and I have to think there are threads on this but I couldn't find any. I have what I believe is an original 5 blade fan, (flat rivets, 5 rivets per blade, "FRONT" and "H" on the blade hub). Why do some have "66" and some not? thanks for any input. Steve
      Steve-----

      I have never seen a 3888366 which did not have a "66" stamped on it. Maybe there are some, but I've never run across one. These fans were only available in SERVICE for a very short time so it's not as if things could have changed during a long manufacturing run.
      In Appreciation of John Hinckley

      Comment

      • David L.
        Expired
        • July 31, 1980
        • 3310

        #4
        Re: 68 Big Block fan?

        Steve,

        Is the measurement from the center of the hub hole to the tip of any blade 8 3/4" (17 1/2" dia. fan) or is it 8 1/2" or 9"?

        Dave

        Comment

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