What carbs to use on factory dual Quad Manifold?

Discussion in ''Da Nailhead' started by elliet, Apr 14, 2008.

  1. elliet

    elliet Tom's 66 Lark

    Hello,
    I am sure it is on here somewhere but I just spent a good hour looking and didn't find a clear cut answer, but what does everyone recommend using on the factory buick dual quad manifold? I have a 1965 425 (Mild cam, headers, etc) that i put in my 66 Skylark and have had some issue's with the factory carters? So I really have three scenario's

    1) Have the original carters rebuilt by someone else!

    2) Have the competition carters I have sitting on a shelf rebuilt and use them?

    3) Buy new carbs (If so which one's and size?)

    Thanks
    Tom
     
  2. wkillgs

    wkillgs Gold Level Contributor

    Tom, I would go with either #1 or #2.
    If you have alot of money to spare, then #3 is another option.

    Call Carmen Faso in NY, and ask what a basic rebuild would cost.
    The old comp series AFB's should work okay too. You''l need new linkage tho.
    Do you know what size they are? Is there a number stamped on them? Anything from 500's to 750's will work.
    You can try giving the carbs a good cleaning. Take the top off and give it a good spraydown, with carb cleaner, get the passages too. Buy a new top gasket from NAPA, and I believe they have the accelerator pumps too. That is worth a try.

    What kind of issues are you having? Maybe it's something simple.
     
  3. riv1964

    riv1964 Well-Known Member

    Tom,
    I'm using 2 Edelbrock Performers part 1404 (500 CFM's) with good luck

    425 + .060 2x4 Weiand manifold with 2 inch primary 3 1/2 collectors headers, 3.90 or is it 3.91? gears

    Been running them for about 5 years

    Roger
     

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