2 1969 427/435 questions

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  • Joseph A.
    Very Frequent User
    • June 21, 2012
    • 136
    #1

    2 1969 427/435 questions

    1) I am trying to find out the correct fuel pump for a 1969 427/435 Corvette. I have a 40659 but from what I am reading in some places they state that is for a 390 HP car. Some guidance would be appreciated. And 2) when did they change the PCV valve from milled to stamped. I know it took place during the 69 model year I was wondering if there is an accepted time frame. My car is a 21st of Jan 1969 production car.
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    • Joe L.
      Beyond Control Poster
      • February 1, 1988
      • 43129
      #2
      Re: 2 1969 427/435 questions

      Originally posted by Joseph Aronne (17712)
      1) I am trying to find out the correct fuel pump for a 1969 427/435 Corvette. I have a 40659 but from what I am reading in some places they state that is for a 390 HP car. Some guidance would be appreciated. And 2) when did they change the PCV valve from milled to stamped. I know it took place during the 69 model year I was wondering if there is an accepted time frame. My car is a 21st of Jan 1969 production car.

      Joseph------


      In general, Holley equipped cars used different fuel pumps than Q-Jet equipped cars. The AC 40659 is a fuel pump for Q-Jet equipped cars. I believe that the 1969 L-71 was originally equipped with a 40482 carburetor and GM agrees with me.
      In Appreciation of John Hinckley
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        • Joseph A.
          Very Frequent User
          • June 21, 2012
          • 136
          #3
          Re: 2 1969 427/435 questions

          Any thoughts on the PCV valve
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            • Joe L.
              Beyond Control Poster
              • February 1, 1988
              • 43129
              #4
              Re: 2 1969 427/435 questions

              Originally posted by Joseph Aronne (17712)
              Any thoughts on the PCV valve

              Joseph------


              I believe the original 1969 era valves were of the "machined" type.
              In Appreciation of John Hinckley
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                • Joseph A.
                  Very Frequent User
                  • June 21, 2012
                  • 136
                  #5
                  Re: 2 1969 427/435 questions

                  Joe

                  The 69 Judging manual says 40659 for 435HP
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                    • Michael V.
                      Frequent User
                      • June 1, 1995
                      • 73
                      #6
                      Re: 2 1969 427/435 questions

                      My 1969 Camaro Z28 302 has a machined PCV valve.
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                        • Ray K.
                          Very Frequent User
                          • August 1, 1985
                          • 369
                          #7
                          Re: 2 1969 427/435 questions

                          Joseph,

                          The fuel pump #40482 is correct as Joe L stated for a 1969 L-71 435HP engine with 3x2 Holley Carbs.

                          Ray
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                            • Joseph A.
                              Very Frequent User
                              • June 21, 2012
                              • 136
                              #8
                              Re: 2 1969 427/435 questions

                              When was yours built as I have one of those also
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                                • Joseph A.
                                  Very Frequent User
                                  • June 21, 2012
                                  • 136
                                  #9
                                  Re: 2 1969 427/435 questions

                                  Z/28 used CV746C
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                                    • Joseph A.
                                      Very Frequent User
                                      • June 21, 2012
                                      • 136
                                      #10
                                      Re: 2 1969 427/435 questions

                                      Mike when was you Z/28 built as they change to the stamped one during the later half of 69
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                                        • Michael V.
                                          Frequent User
                                          • June 1, 1995
                                          • 73
                                          #11
                                          Re: 2 1969 427/435 questions

                                          Fourth week of September 1968. Mine was an early one.
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                                            • Joseph A.
                                              Very Frequent User
                                              • June 21, 2012
                                              • 136
                                              #12
                                              Re: 2 1969 427/435 questions

                                              Thank you, My corvette is a Jan 69 and it has a machined PCV but my Z28 is a last week of June 69 car and has a stamped one
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