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Technical Five2 Barrel Setup

Discussion in 'Traditional Hot Rods' started by dart4forte, Jun 2, 2022.

  1. dart4forte
    Joined: Jun 10, 2009
    Posts: 199

    dart4forte
    Member
    from Mesa, AZ

    Was there someone who posted about this intake? It was a topic of discussion this morning at out weekly Hotrod Group meeting.
     

    Attached Files:

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  2. Weird
     
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  3. indyjps
    Joined: Feb 21, 2007
    Posts: 4,992

    indyjps
    Member

    How the hell does that linkage work ?

    What's the details, photoshop or real deal, who made it?
     
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  4. 73RR
    Joined: Jan 29, 2007
    Posts: 6,739

    73RR
    Member

    I do recall some chatter about that thing but cannot recall any details. Not even sure what you would use as a search term.....
     

  5. 41rodderz
    Joined: Sep 27, 2010
    Posts: 6,438

    41rodderz
    Member
    from Oregon

    Some straight rods , bell cranks and clamps. It would be like pulling your hair out :p
     
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  6. 41rodderz
    Joined: Sep 27, 2010
    Posts: 6,438

    41rodderz
    Member
    from Oregon

    Easier to run off the center carb and have the outer carbs for bling .:D
     
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  7. tubman
    Joined: May 16, 2007
    Posts: 6,148

    tubman
    ALLIANCE MEMBER

    I seem to remember that that is an experimental Pontiac factory intake.
     
  8. I was always wondering about the linkage too. Couple pics with carbs; but most of the linkage is still a mystery.
    olds 5x2 001.jpg olds 5x2 006.jpg
     
  9. Jag had an intake similar in the 69’s on there inline 6’s with 4 carbs

    the Center one was a smaller carb mounted sideways only used for warm up.

    maybe this is a similar idea
     
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  10. 51504bat
    Joined: May 22, 2010
    Posts: 3,552

    51504bat
    ALLIANCE MEMBER

    IIRC there was someone running a straight 6 (or maybe 8) with 5 carbs. His reasoning for 5 was because 6 wouldn't fit. Sorry no photos or other details.
     
  11. tubman
    Joined: May 16, 2007
    Posts: 6,148

    tubman
    ALLIANCE MEMBER

    When I raced vintage dirt track, I couple of guys ran Buick straight eights. I remember at least one with 5 97's. I think that was more of an economic move than a space problem. I have also seen GMC sixes with 5 97's.
     
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  12. Harv
    Joined: Jan 16, 2008
    Posts: 434

    Harv
    Member
    from Sydney

    Were the penta-carbs running on plenum type manifolds, or individual runners? Number of carbs doesn't matter overly with a plenum, but gets pretty funky balancing runners.

    Cheers,
    Harv
     
  13. abe lugo
    Joined: Nov 8, 2002
    Posts: 2,650

    abe lugo
    ALLIANCE MEMBER

    this looks photoshopped so I photoshopped some more in for help. I mean hell why not 7??
    Nevermind me..
    Just something for at the end of my workday

    No 7 min abs.jpg
     
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  14. tubman
    Joined: May 16, 2007
    Posts: 6,148

    tubman
    ALLIANCE MEMBER

    IIRC, the Buick at least was a plenum; I seem to remember it was a sheet metal box about 4" square that had flanged tubes going to the intake ports.
     
  15. Harv
    Joined: Jan 16, 2008
    Posts: 434

    Harv
    Member
    from Sydney

    Cool. There is a part of me that wants to own a straight-eight. No idea what I'd do with one, but they are a beautiful machine.

    (the same part of me wants a Merlin engine too :rolleyes::D)

    Cheers,
    Harv
     
  16. 327Eric
    Joined: May 9, 2008
    Posts: 1,704

    327Eric
    Member
    from Diablo Ca.

    img_1_1650672019258.jpg lots of crazy ideas out there
     
  17. tubman
    Joined: May 16, 2007
    Posts: 6,148

    tubman
    ALLIANCE MEMBER

    When I built my engine test-run stand, I made it extra long in case I would run into a 320 ci Buick. (A 356 ci Packard with a 9 bearing crankshaft would also do.):D
     
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  18. spanners
    Joined: Feb 24, 2009
    Posts: 1,578

    spanners
    Member

    One of the original Sydney HAMBsters had a straight 8 but with just one carb. As far as I know he still owns it but hasn't raced it for a long time.
     
  19. Harv
    Joined: Jan 16, 2008
    Posts: 434

    Harv
    Member
    from Sydney

    Matt Hale's 248ci Buick?
     
  20. spanners
    Joined: Feb 24, 2009
    Posts: 1,578

    spanners
    Member

    Don't know his name but can probably get it from the Qld boys. I think there's an early Day of the Drags video with it.
     
  21. Speed Gems
    Joined: Jul 17, 2012
    Posts: 4,686

    Speed Gems
    Member

  22. dart4forte
    Joined: Jun 10, 2009
    Posts: 199

    dart4forte
    Member
    from Mesa, AZ

    Couple of more pics. I looked it up on one of the Pontiac sites. One of the guys from back in the day was familiar with the setup.he said the center carb ran the idle circuit.
     

    Attached Files:

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  23. Speed Gems
    Joined: Jul 17, 2012
    Posts: 4,686

    Speed Gems
    Member

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  24. Mimilan
    Joined: Jun 13, 2019
    Posts: 1,172

    Mimilan
    Member

    Here's one from the archives of New Zealand.
    GMC 6 cylinder 270? [overhead valve with 3 siamesed intake ports , and 4 exhaust ports]

    upload_2022-6-3_14-33-14.png

    upload_2022-6-3_14-34-8.png
     
    Last edited: Jun 2, 2022
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  25. Fordors
    Joined: Sep 22, 2016
    Posts: 4,307

    Fordors
    Member

    D238CCFF-CE31-4BE6-8183-6BD58C91C7EF.jpeg 1F3C51D2-B9D3-469B-BF2C-95D7D7717493.jpeg 583511B5-6DC2-42CA-A85B-F8F08D28B4EC.jpeg

    That first manifold is an early Olds, look at the water crossover. Second is Pontiac, mid ‘50’s had that type thermostat mount and the third is clearly a Y-Block, as @Speed Gems commented. It’s got custom headers, four Holley 94’s and that center carb is a Holley Teapot.
     
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  26. PotvinV8
    Joined: Mar 30, 2009
    Posts: 240

    PotvinV8
    Member

    Whether it worked or not, it's so cool to see the old hot rod ingenuity that was used back in the day!
     
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  27. Ned Ludd
    Joined: May 15, 2009
    Posts: 4,507

    Ned Ludd
    Member

    As I recall from what I'd picked up, these were a sort of minor thing for a short time. Early ones were made by grafting carb bases and runners into existing single-2bbl manifolds. Subsequently a few got cast that way, so it must have been successful enough to warrant that effort at least.

    I've also heard about more than one instance of Scott MFI being run in the outer positions, with a 2-bbl in the middle. The idea of a setup in which the fuel injection only comes in as you approach WOT has long appealed to me. It makes perfect sense given a commitment to the sort of technological palette we prefer here.
     
  28. moparboy440
    Joined: Sep 30, 2011
    Posts: 897

    moparboy440
    Member
    from Finland

  29. sdluck
    Joined: Sep 19, 2006
    Posts: 2,958

    sdluck
    Member

    There were some 6 carb setups at eagle field over the years. I think Meagan,friends with Hotrodladycruzer bought a 5 carb manifold like the one in the picture.
     
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  30. 41 GMC K-18
    Joined: Jun 27, 2019
    Posts: 2,377

    41 GMC K-18
    ALLIANCE MEMBER

    No, this isn't truly functional, it was on a vendors table down at the Portland swap-meet a number of years ago, purely as a lure with an outrageous price tag as well. Still it was a pretty cool set up, how ever dysfunctional it was.

    5 carb manifold (2).JPG IMG_3085 (2).JPG IMG_3086.JPG
     
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