3917234 AL Smog Pump Pulley - NCRS Discussion Boards

3917234 AL Smog Pump Pulley

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  • Dave S.
    Extremely Frequent Poster
    • August 31, 1992
    • 2918

    3917234 AL Smog Pump Pulley

    Can one of the Smog experts tell me what the correct application for this pulley is.?
    Any help is appreciated.
  • John S.
    Very Frequent User
    • June 15, 2015
    • 505

    #2
    1973 L82 M21 4 Speed, very original and well documented driver/survivor
    NW Chapter Member, 2016 Bend Regional Top Flight
    73/74 TIM&JG 3rd Edition Revision Team Member

    Comment

    • Richard M.
      Super Moderator
      • August 31, 1988
      • 11299

      #3
      Re: 3917234 AL Smog Pump Pulley

      Dave, I'm not a smogger, but....

      Using the Search on http://www.gmpartswiki.com shows Corvette and Camaro to name a few.

      E.G.



      And more.
      Rich

      Comment

      • James G.
        Very Frequent User
        • August 22, 2018
        • 783

        #4
        Re: 3917234 AL Smog Pump Pulley

        234 without the AL and with the pie crust back (appears manganese phosphate - dark grey crystals) the first style HP SB pulley, I believe it's the same as 69 L46 vette then the 70-72 LT1- perhaps there is a late 72 LT1 without the piecrust 234 pulley- ?


        234AL without piecrust back (painted black) is what is on my brother's low mile pretty early(iirc C11 build) 73 L82 and I bought a low mile 74L82 smog setup with the same 234AL both were painted black.
        James A Groome
        1971 LT1 11130 - https://photos.app.goo.gl/zSoFz24JMPXw5Ffi9 - the black LT1
        1971 LT1 21783 - 3 STAR Preservation.- https://photos.app.goo.gl/wMRDJgmyDyAwc9Nh8 - Brandshatch Green LT1
        My first gen Camaro research http://www.camaros.org/forum/index.p...owposts;u=4337
        Posts on Yenko boards... https://www.yenko.net/forum/search.php?searchid=826453

        Comment

        • Richard K.
          Very Frequent User
          • March 31, 1988
          • 207

          #5
          Re: 3917234 AL Smog Pump Pulley

          The info that I accumulated years ago from a parts book, Gr. 3.650 for the 3917234 pulley shows:
          68 Corvette (exc. 427)
          69 Corvette 350 (exc. H./Per)
          70-72 Corvette 350 (w/Sp. H/Per)
          72 Corvette 350 (exc. Sp. H. Per)
          73 Corvette 350
          The pulley #3932458 was used on :
          69 Corvette w/H/Per (350) (exc. C.A.C.)

          Comment

          • Dave S.
            Extremely Frequent Poster
            • August 31, 1992
            • 2918

            #6
            Re: 3917234 AL Smog Pump Pulley

            Thanks to all. Now I know what I have.

            Comment

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