Dumb question of the day

Discussion in ''Da Nailhead' started by Dragdoc, Dec 2, 2019.

  1. Dragdoc

    Dragdoc Well-Known Member

    I got myself a 4 bbl intake for my 364, and did Docs modifications.

    Is this considered a square bore pattern even though the holes are different sizes? Looks like 1 and 5/8th in front and 1 and 3/4 rear. Typical spread bore pattern is vastly different in size front to rear.

    Either way, what are my carbs of choice? image.jpg
  2. TrunkMonkey

    TrunkMonkey Well-Known Member

    Yes. That is the square bore.
    The spread bore is very obvious.

    I would contact Matt or his dad at at Centerville Auto Repair about the carb. Edlebrock is a good carb but if you are running the Dynaflow, you may need help with the throttle linkage.
  3. 1972Mach1

    1972Mach1 Just some guy.....

    I've got a Edelbrock 750 on my '63 Riv. Here's the Dynaflow switch pitch linkage, I can get a better pic if needed:

  4. Dragdoc

    Dragdoc Well-Known Member

    Thank you for the confirmation of the square bore carburetor!

    I am actually getting rid of the dynaslow and torque tube. Got a ‘61 drop out center section and will be setting up a triangulated four bar. Already have a ‘66 ST400 with ST 300 converter. And carb linkage from a ‘66.

    Along with the switch to a 4bbl and dual exhaust, it should all really make it feel like a different car.
    PGSS, 1972Mach1 and TrunkMonkey like this.
  5. philbquick

    philbquick Founders Club Member

    You'll need to use either an AFB style ( stock Buick or Edlebrock) or Holley carb with that, probably around 700 cfm.
  6. John Codman

    John Codman Platinum Level Contributor

    I have an Edelbrock 650 on my 425 and it's too small.
  7. Dragdoc

    Dragdoc Well-Known Member

    I just bought two Edelbrock AVS2 carbs, a 650 for my sons 306 Ford and an Well, Im gonna try the Eddy AVS2 in an 800. I was told to use a 750, and 800 isnt much more. Thinking I could slightly limit the throttle so it doesnt open completely

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