PO1 vs PO2..?? - NCRS Discussion Boards

PO1 vs PO2..??

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  • Jeff Burkey

    PO1 vs PO2..??

    Can anyone shed some light on how these two part #'s differ..?? Thank you, Jeff Burkey
  • Mike Baker

    #2
    Re: PO1 vs PO2..??

    I've wondered the same thing. I think p01 was 68 only and p02 was 69-72 so it may have been different because of the 15x7 (68) vs. 15x8 wheels. Maybe the P02s are shallower?

    I've never actually confirmed that there were two different part numbers are you sure that it was not just the option code that changed between 68 and 69?

    It would be interesting to know also what the valve stem extensions looked like for that option. I've seen references to them but never seen one.

    Sorry I could not answer your question.

    Comment

    • Mike Baker

      #3
      Re: PO1 vs PO2..??

      I've wondered the same thing. I think p01 was 68 only and p02 was 69-72 so it may have been different because of the 15x7 (68) vs. 15x8 wheels. Maybe the P02s are shallower?

      I've never actually confirmed that there were two different part numbers are you sure that it was not just the option code that changed between 68 and 69?

      It would be interesting to know also what the valve stem extensions looked like for that option. I've seen references to them but never seen one.

      Sorry I could not answer your question.

      Comment

      • Joe L.
        Beyond Control Poster
        • February 1, 1988
        • 43193

        #4
        Re: PO1 vs PO2..??

        Mike and Jeff----

        The wheel covers used for the PO1 or PO2 were the same throughout the 68-74 period. All were GM #3923630. I think that the change in option designation did not reflect any change in the option, itself.
        In Appreciation of John Hinckley

        Comment

        • Joe L.
          Beyond Control Poster
          • February 1, 1988
          • 43193

          #5
          Re: PO1 vs PO2..??

          Mike and Jeff----

          The wheel covers used for the PO1 or PO2 were the same throughout the 68-74 period. All were GM #3923630. I think that the change in option designation did not reflect any change in the option, itself.
          In Appreciation of John Hinckley

          Comment

          • Jack H.
            Extremely Frequent Poster
            • April 1, 1990
            • 9906

            #6
            Re: PO1 vs PO2..??

            Valve stem extentions were screw-on plastic devices made (and still available at your local auto parts store) by Schraeder. You remove the Dill valve stem cap, screw on the extender and its self-sealing end IS the functional fill point--no provision for or need of a valve stem cap on the end of the extender.

            Comment

            • Jack H.
              Extremely Frequent Poster
              • April 1, 1990
              • 9906

              #7
              Re: PO1 vs PO2..??

              Valve stem extentions were screw-on plastic devices made (and still available at your local auto parts store) by Schraeder. You remove the Dill valve stem cap, screw on the extender and its self-sealing end IS the functional fill point--no provision for or need of a valve stem cap on the end of the extender.

              Comment

              • Jeff Chester

                #8
                Re: PO1 vs PO2..??

                i thought the P01 were 68 only, and different for the rim size also?? jc

                Comment

                • Jeff Chester

                  #9
                  Re: PO1 vs PO2..??

                  i thought the P01 were 68 only, and different for the rim size also?? jc

                  Comment

                  • Robert C.
                    Expired
                    • December 1, 1993
                    • 1153

                    #10
                    Re: Differences

                    There is a difference between the hubcaps that came with the car and the ones you bought over the counter. The center hub was a little bit smaller in diameter on the over the counter caps. The test is to run your fingernail down the fins from the outside toward the center and if your fingernail "catches" on the rear outside edge of the center hub, it's an original.

                    Comment

                    • Robert C.
                      Expired
                      • December 1, 1993
                      • 1153

                      #11
                      Re: Differences

                      There is a difference between the hubcaps that came with the car and the ones you bought over the counter. The center hub was a little bit smaller in diameter on the over the counter caps. The test is to run your fingernail down the fins from the outside toward the center and if your fingernail "catches" on the rear outside edge of the center hub, it's an original.

                      Comment

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