59 Dual Quads on a 270HP - NCRS Discussion Boards

59 Dual Quads on a 270HP

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  • Tony M.
    Expired
    • August 31, 2010
    • 102

    59 Dual Quads on a 270HP

    I hope everyone is well!

    I have enclosed pictures of the dual carb setup on my 59 Corvette. I have owned the car for twenty six years and a friend the previous ten. I know the quads are not standard 2613S/2614S but Rusty at Carbdoctor seems confident they are Chevy issues. They are Carter WCFB's and in the family of CM448.

    Questions: There are no tags so how do you identify them? Is it possible they were dealer supplied, either warranty replacement or swap?

    All comments are appreciated or guidance as to who is best at identifying these Carters?

    Thanks again!
    Tony
    carb3.jpg
    carb2.jpg
    carb1.jpg
  • Joseph L.
    Very Frequent User
    • July 26, 2012
    • 162

    #2
    Re: 59 Dual Quads on a 270HP

    You are going to need all the numbers to these. That includes the casting numbers for the bases. You will need to remove the screws on the bottom to see that. The bases are not Corvette. The front carb has an idle bypass screw. The Idle speed screws are mounted horizontally on these. The linkages are also not Corvette.
    They may be a very rare setup that would be valuable to the right person.
    Joe

    Comment

    • Gary C.
      Administrator
      • October 1, 1982
      • 17659

      #3
      Re: 59 Dual Quads on a 270HP

      Tony,

      On the NCRS Contacts page https://www.ncrs.org/contact/index.php Gary Hodges is listed as the Carb Technical Specialist. If you have questions about carb numbers, Gary's the best source.

      As Joe LeMay said, you'll need to get all the numbers off of the carbs.

      Gary
      ....
      NCRS Texas Chapter
      https://www.ncrstexas.org/

      https://www.facebook.com/profile.php?id=61565408483631

      Comment

      • Tony M.
        Expired
        • August 31, 2010
        • 102

        #4
        Re: 59 Dual Quads on a 270HP

        Thanks Joe! It would be great if we could at least identify where they came from!

        Have a great weekend!
        Tony

        Comment

        • Tony M.
          Expired
          • August 31, 2010
          • 102

          #5
          Re: 59 Dual Quads on a 270HP

          Thanks Gary, we will figure this out!

          Have a great weekend!
          Tony

          Comment

          • Frank D.
            Expired
            • December 27, 2007
            • 2703

            #6
            Re: 59 Dual Quads on a 270HP

            I can't quite read the number on the front carb air horn, if its 6-1299, its prob legit and the idle air bypass screws were used on '56 and early '57 dual quads. Here is a numbers "cheat sheet" to help you sort things out.
            Attached Files

            Comment

            • Tony M.
              Expired
              • August 31, 2010
              • 102

              #7
              Re: 59 Dual Quads on a 270HP

              Frank,
              I hope you are well!

              Thanks for taking the time to respond! This is what I can see, so far!
              -Air Horns show casting numbers 6-1310 on both with stamped numbers 1307 Rear and 1306 Front.
              -Bowls have casting numbers 0158 and looks like the 0 is stamped and 158 cast???

              That is all I got.

              Thanks again!
              Tony

              Comment

              • Frank D.
                Expired
                • December 27, 2007
                • 2703

                #8
                Re: 59 Dual Quads on a 270HP

                Originally posted by Tony Marra (52140)
                Frank,
                I hope you are well!

                Thanks for taking the time to respond! This is what I can see, so far!
                -Air Horns show casting numbers 6-1310 on both with stamped numbers 1307 Rear and 1306 Front.
                -Bowls have casting numbers 0158 and looks like the 0 is stamped and 158 cast???

                That is all I got.

                Thanks again!
                Tony
                I am most well - thanks for asking and I hope the same for you...
                Its looking llike you may have a Chrysler dual quad setup...
                Other than correctness, there is NOTHING wroing with such a setup on a Corvette, and, in my experience the larger bores can provide a noticeable performance boost. The attached PDF will tell you all about the Corvette vs Chrysler dual quad differences.
                Attached Files

                Comment

                • Tony M.
                  Expired
                  • August 31, 2010
                  • 102

                  #9
                  Re: 59 Dual Quads on a 270HP

                  Frank,
                  Yep, certainly seems like a Chrysler setup!!! Wonder if it is worth selling or have any value? It would be nice to get the right carbs! It would also be nice if I had all my teeth and hair given that we are the same age.

                  Appreciate your insight and efforts!
                  Tony

                  Comment

                  • Mike M.
                    NCRS Past President
                    • May 31, 1974
                    • 8382

                    #10
                    Re: 59 Dual Quads on a 270HP

                    looking straight down into the carbs, chrysler wcfb's will have 1" embossed whereas corvettes have 15/16" embossed. mike

                    Comment

                    • Tony M.
                      Expired
                      • August 31, 2010
                      • 102

                      #11
                      Re: 59 Dual Quads on a 270HP

                      Mike,
                      1 embossed on both carbs, in-between the primary bores.

                      Thanks Mike, I am learning today!!!

                      Comment

                      • Jimmy G.
                        Very Frequent User
                        • November 1, 1979
                        • 976

                        #12
                        Re: 59 Dual Quads on a 270HP

                        Mike Email me at tio2jim@aol.com
                        Founder - Carolinas Chapter NCRS

                        Comment

                        • Tony M.
                          Expired
                          • August 31, 2010
                          • 102

                          #13
                          Re: 59 Dual Quads on a 270HP

                          Jimmy,
                          Just for clarification, did you want Mike to email you or myself, post initiator?

                          Tony Marra

                          Comment

                          • Tony M.
                            Expired
                            • August 31, 2010
                            • 102

                            #14
                            Re: 59 Dual Quads on a 270HP

                            Gentlemen,
                            A little research and to confirm Frank's initial diagnoses, the carbs are Chrysler Carters 2631S and 2632S. They were original to the 1957/58 Plymouth Fury V800 Dual Quad 318 with 290HP.

                            There seems to be a value as there is a set of carbs for 2500 US on eBay, not working. Now we look for original Corvette dual quads!

                            Thanks to all.
                            Tony

                            Comment

                            • Frank D.
                              Expired
                              • December 27, 2007
                              • 2703

                              #15
                              Re: 59 Dual Quads on a 270HP

                              Just so you know - both the 245hp and 270hp Corvette dual quad carbs will have 6-1299 lids; there are a few "tells" to determine if a set is for a 270hp car (vs a 245hp car). A big one, that can't be faked and can be seen without disassembling things is the 45* angle cut of the primary nozzles as you look straight down the bore. Look at the green circled items in the first picture in this article.

                              245hp carbs will have a straight vertical cut similar to the rear nozzles. I have seen more than one 270hp car running the 245hp carbs that are incorrect (but functional).
                              Attached Files

                              Comment

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