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Technical Stromberg carbs......I think

Discussion in 'Traditional Hot Rods' started by luckylou, Jul 2, 2020.

  1. luckylou
    Joined: Jan 6, 2008
    Posts: 89

    luckylou
    Member
    from canada

    image.jpeg image.jpeg Hello fellow Hambers can someone help me ID these carbs please, I'm stumped paint is so thick I can't see any numbers . Has Ford logo on fuel bowl
     
    Last edited: Jul 2, 2020
  2. big duece
    Joined: Jul 28, 2008
    Posts: 5,903

    big duece
    Member
    from kansas

    Holley 94... Strombergs are different... Holley 94s have the fuel inlet in the top lid, the Strombergs have the fuel inlet in the fuel bowl itself, below the lid. carb3.jpg
     
    Last edited: Jul 2, 2020
  3. ^^^^^^As found on many Ford flat head V8's from the factory.
     
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  4. dana barlow
    Joined: May 30, 2006
    Posts: 3,883

    dana barlow
    Member
    from Miami Fla.
    1. Y-blocks

    Big Duece ,is right,they are Ford 94 made by Holley,but as far as I know they were a design by Stromberg, there are a few number size type that have same outer look with other size butterflys an ventures. I was told 81 is smallest one. The pic from big duece is 97
     
    Last edited: Jul 2, 2020
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  5. F-ONE
    Joined: Mar 27, 2008
    Posts: 2,096

    F-ONE
    Member
    from Alabama

    Dana,
    It was Chandler and Groves.
    Whether Chandler and Groves had an affiliation with Stromberg, I know not.
     
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  6. 41rodderz
    Joined: Sep 27, 2010
    Posts: 4,673

    41rodderz
    Member
    from Oregon

    I thought Chandler and Groves first made them , then Holley started building them for Ford to keep up with demand. Could be wrong , but I didn’t think Stromberg had any part in it.
     
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  7. tubman
    Joined: May 16, 2007
    Posts: 4,972

    tubman
    ALLIANCE MEMBER

    If you dig deeply into the history of these carburetors, you will find how penurious Henry Ford could be.

    Kind of a 1930's version of "Speedy Bill".:rolleyes:
     
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  8. clem
    Joined: Dec 20, 2006
    Posts: 2,849

    clem
    Member

    that's what I thought, although I read somewhere that Holley made them, not to keep up with demand, but because they supplied them for 10 cents a piece cheaper........ Who really knows ?
     
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  9. luckylou
    Joined: Jan 6, 2008
    Posts: 89

    luckylou
    Member
    from canada

    Thank you guys and thanks for a small history lesson
     
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  10. Holley 94's, The one on the left is the later 8BA variant. It uses an external power valve, it can be seen sticking out the back of the base, If you put up pictures of the other side maybe we can help some more.

    upload_2020-7-3_8-51-4.png
     
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  11. F-ONE
    Joined: Mar 27, 2008
    Posts: 2,096

    F-ONE
    Member
    from Alabama

    If it’s 8BA it’s very late ‘52-‘53.
    94’s in Shoeboxes and likely F1s with the 8RT used 94s with the internal spark that the distributor advance screwed into the back of the carburetor.

    Likely that’s a overhead valve version....Y block.

    You’ll find through ‘56 there’s hundreds of versions and configurations of these.

    Ford ‘94 is pretty much a nickname. Holley called these 2100s and also their unrelated replacement still made by Holley today.
     
  12. 54vicky
    Joined: Dec 13, 2011
    Posts: 1,335

    54vicky
    Member

    that is not a power valve it is part of spark control works in conjunction with distributor.
     
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  13. luckylou
    Joined: Jan 6, 2008
    Posts: 89

    luckylou
    Member
    from canada

    I will take pictures of the other side tommorow... I don't understand why they used to different 94s for this dual carb setup.. I want to use this setup but don't know if it's going to be a headache .
     
  14. clem
    Joined: Dec 20, 2006
    Posts: 2,849

    clem
    Member

    It’s also possible that you have a larger bore carb there. Some were actually 1 & 1/16” bore ( used on mid to late ‘50s one motors ? ). - verses the original .94” which is where the term Holley 94 comes from.
    Most have the size on the carb.
    If so, on fixed linkage you should have two identical carbs. Not so important with progressive linkage.

    about 17 variants of the Holley .94 from memory, - I may be wrong though.
     
    Last edited: Jul 4, 2020
  15. clem
    Joined: Dec 20, 2006
    Posts: 2,849

    clem
    Member

    I think it’s a spark arrestor. Often mistaken as what you said. Power valves were all internal.
     
  16. clem
    Joined: Dec 20, 2006
    Posts: 2,849

    clem
    Member

    Sizing shown here........
    1 & 1/16 on left .94” on right.
    Not physically larger, just a deceptive camera angle. - poor photography.

    B5D918DA-AB2D-40E0-80F0-F45E9C2199A8.jpeg
     
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  17. carbking
    Joined: Dec 20, 2008
    Posts: 2,783

    carbking
    Member

    The carburetors are type AA-1 two-barrel carburetors. These were originally produced by the Chandler Groves Carburetor Company. They are not Strombergs. Chandler Groves eventually became a division of Holley.

    There is some connection from Stromberg to Chandler Groves, as the very earliest Chandler Grove carburetor used some stock Stromberg parts. An example would be the earliest Chandler Grove fuel valve (a.k.a. needle and seat assemble) was Stromberg. While I have some "hearsay" as to the connection, I cannot prove it, so will not "parrot" the hearsay.

    There are MAJOR design differences in the C-G model AA-1, and the Stromberg EE-1. Probably the greatest difference is in the power circuit. The Stromberg EE-1 power valve, constructed of brass, and a spring, was located in the bottom of the bowl, and fed passage-ways that intersected with the main metering jets. Thus the power system augmented the main system, and ALL of this fuel was delivered through the main discharge nozzles.

    Contrast the above with the power system in the AA-1 (C-G). The power valve in the AA-1 is a spring-loaded diaphragm, in a zinc-alloy valve, located in the bottom of the bowl. But the important difference is in the discharge of the fuel. Whereas the Stromberg valve discharges through the main discharge nozzles, the AA-1 valve has a passage below the valve, connected directly to the intake manifold. A backfire can blow the diaphragm, and the AA-1 will just leak into the intake. This is the carburetor directly responsible for the term "leaking down".

    Lots of folks refer to all type AA-1's as"94's", as the early AA-1's did have a 94 cast on the bowl, the 94 referring to 0.94 inch venturi size. Later AA-1, also erroneously called 94's, had a 1 inch venturi, and some of the latest had a 1 1/16 inch venturi. There are quite a few different type AA-1 carbs, I have 82 listings in my database.

    Of course, lots of folks also erroneously refer to ALL Stromberg EE-1's as 97, because some of the Ford versions (only) has a 97 on the side of the bowl. Not that I object to the generalization, always nice to buy Auburn carburetors at Ford prices, because the seller mis-advertised the unit.

    Jon.
     
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  18. luckylou
    Joined: Jan 6, 2008
    Posts: 89

    luckylou
    Member
    from canada

    image.jpeg So 1 carb has the number 94 on it and the other looks like a number 1. And her is a pic of the other side
     
  19. clem
    Joined: Dec 20, 2006
    Posts: 2,849

    clem
    Member

    Probably the 1 refers to a 1” bore. Is it in the same spot as my photos show ?

    carb on left in your pic seems to say Model 7RT.
     
  20. luckylou
    Joined: Jan 6, 2008
    Posts: 89

    luckylou
    Member
    from canada

    It's on the back of the carb I will take a pic of the back side as well
     

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