67 400 HP conversion to aftermarket intake & carb - NCRS Discussion Boards

67 400 HP conversion to aftermarket intake & carb

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Curt S.
    Frequent User
    • April 30, 1975
    • 64

    #16
    Re: 67 400 HP conversion to aftermarket intake & carb

    I like patrick's solution. Also, I have 2 3x2 cars both sets of carbs were redone by Holley. I believe their process is very comprehensive especially making sure all flat surfaces are and their recolor is excellent. One set has been running for two years the other five years. I check them often but have only wiped and cleaned the surfaces. It is my opinion , any set up will need checking and service from time to time. Hope this helps.

    Comment

    • Peter M.
      Very Frequent User
      • May 30, 2013
      • 358

      #17
      Re: 67 400 HP conversion to aftermarket intake & carb

      Thanks Joe.

      Comment

      • William F.
        Extremely Frequent Poster
        • June 9, 2009
        • 1363

        #18
        Re: 67 400 HP conversion to aftermarket intake & carb

        Are you using the newer blue gaskets and genuine holley parts? They work much better than the older style "brown" paper gaskets? I don't have leaks on my Holley's (4bbl) with these gaskets and you shouldn't either unless parts of you carbs are warped. Whose rebuilding your carbs? Jerry McNeish, Bob Kunz and Eric Jackson get high marks on this forum; some other rebuilders, not so much.

        Comment

        • Gene M.
          Extremely Frequent Poster
          • April 1, 1985
          • 4232

          #19
          Re: 67 400 HP conversion to aftermarket intake & carb

          Wiend not sure of spelling makes a manifold for 4 barrel (carter or holley) that is regular two plane. But I can't say if it is low enough to fit under the mid year hood. I have one on my Nomad. It has oval port aluminum Edelbrock heads on it.

          The manifold is an old design and may be an issue finding one.

          Comment

          • Joe L.
            Beyond Control Poster
            • February 1, 1988
            • 43221

            #20
            Re: 67 400 HP conversion to aftermarket intake & carb

            Originally posted by Gene Manno (8571)
            Wiend not sure of spelling makes a manifold for 4 barrel (carter or holley) that is regular two plane. But I can't say if it is low enough to fit under the mid year hood. I have one on my Nomad. It has oval port aluminum Edelbrock heads on it.

            The manifold is an old design and may be an issue finding one.

            Gene------


            Obtaining a rectangular or oval port manifold with a square bore flange (i.e. Holley, Carter) is not difficult. GMPP, Edelbrock, and Weiand all offer them, although few, if any, will fit under a C2 or C3 hood. The real problem is finding a rectangular port manifold for a Q-Jet. I know of none. As far as an aluminum, low rise, oval port manifold for a Q-Jet that will fit under a C2 or C3 hood, the only ones I know of are the 68-69 L-36 manifolds and the Edelbrock Torker II. The latter is a single plane manifold that I do not recommend for the street.
            In Appreciation of John Hinckley

            Comment

            • Russ S.
              Extremely Frequent Poster
              • April 30, 1982
              • 2162

              #21
              Re: 67 400 HP conversion to aftermarket intake & carb

              If you are driving the car as you state you want to, then the gaskets shouldn't dry out. In a situation like this, If I was putting wrong parts on the engine, I would go with aftermarket fuel injection. It would get way better milage.
              Originally posted by Stephen Gansky (37182)
              I rebuilt them, had them rebuild, tried many types of gaskets. They leak at the fuel bowls after they sit for a while (and dry out & shrink). Also at base gaskets on secondary's and even the accelerator pump.

              Many 400 HP cars were lost to engine fires from these carbs.

              Comment

              • Timothy B.
                Extremely Frequent Poster
                • April 30, 1983
                • 5186

                #22
                Re: 67 400 HP conversion to aftermarket intake & carb

                I don't think the fire issue is any different on the tri power engines vs the 4150/4160 Holley engines. Many carburetor problems described above are simply uneven surfaces not sealing and sometimes this is caused by over tightening the fasteners. Base gasket leaks can be the metering plate sandwich not sealing causing fuel to leak into the carburetor through the transfer slot and run out the side of the throttle shaft.
                If finding a intake manifold is that difficult I would not give up on the Holley's. There is a learning curve for sure but my experience is that you can get them to run pretty well.

                Comment

                • Stephen G.
                  Very Frequent User
                  • January 1, 2002
                  • 304

                  #23
                  Re: 67 400 HP conversion to aftermarket intake & carb

                  Joe

                  Whats the model number Q Jet I'm looking for ?

                  Steve
                  Steve Gansky
                  Newtown, (Bucks County) PA

                  Comment

                  • Joe L.
                    Beyond Control Poster
                    • February 1, 1988
                    • 43221

                    #24
                    Re: 67 400 HP conversion to aftermarket intake & carb

                    Originally posted by Stephen Gansky (37182)
                    Joe

                    Whats the model number Q Jet I'm looking for ?

                    Steve

                    Steve------


                    For your purposes you don't need to go looking for any particular model Q-Jet. That's a huge benefit since as a result you don't need to pay a ridiculous price just to get a certain "number" and date. I would look for just about any 1966-69 Q-Jet, preferably originally from a big block application. This could include truck carbs, passenger car carbs or whatever. Even a small block carb will work OK, possibly re-jetted. So, there are lots of carb part numbers that will suit your purposes.
                    In Appreciation of John Hinckley

                    Comment

                    Working...
                    Searching...Please wait.
                    An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

                    Please push the back button and reload the previous window.'
                    An unexpected error was returned: 'Your submission could not be processed because the token has expired.

                    Please push the back button and reload the previous window.'
                    An internal error has occurred and the module cannot be displayed.
                    There are no results that meet this criteria.
                    Search Result for "|||"