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Technical Hot rod Flathead

Discussion in 'Traditional Hot Rods' started by 53 Ford Coupe, Sep 7, 2025.

  1. 53 Ford Coupe
    Joined: Aug 8, 2025
    Posts: 3

    53 Ford Coupe

    Are the stock FOMOCO 2 barrel carburetors (c.1953) functional on the multi-carb intakes for the 8BA flatheads? I already have two of these carbs. Better suggestions?

    Also, it is my understanding that most(?) of the multi-carb(2-3) intakes for flatheads intentionally run the intake runners over and next to the exhaust(?) to heat the intake air. Is there an aftermarket multi-carb Flathead intake that addresses this? Designed to keep the intake air insulated from the exhaust?
    Thanks to all!
     
  2. alchemy
    Joined: Sep 27, 2002
    Posts: 22,532

    alchemy
    Member

    Yes you can use the Chandler-Groves (Holley) carbs in multiples. But you can’t use the original distributor with any multiples.

    To stop the exhaust from heating the intake, just pound two plugs in the top of the block before you lay the gasket on.
     
  3. F-ONE
    Joined: Mar 27, 2008
    Posts: 3,670

    F-ONE
    Member
    from Alabama

    You can but…….
    The 8BA used the new Loadomatic Spark advance that debut in 1948 with the Ford F Series 8RT. In 1949 the new Ford car debut with the 8BA with the “modern looking” distributor that the trucks got in ‘48.
    The 8BA,8RT ignition system was completely vacuum controlled and was a marvel. Honestly it’s the best system for a stock 8BA/8RT.
    The main drawback, the distributor and carburetor were matched pairs. Thus the system did not work correctly with multiple carburetors.

    It is possible to run 2 94s by splitting the vacuum signal and fooling with the advance springs. It can be done with 2 94s. Petejoe on here has had some success doing this. The procedure is mentioned in the 1957 book, Fix Your Ford.
    It’s tricky but it can be done with 2 94s.

    Strombergs, late model 4bbls or triples , forget it.

    Now……..
    Many just ignore the advance and set the Stock LOM distributor in the middle or the “best spot” and lock it down. This may actually do OK but the car will have no functioning advance.
    It may be prone to run rich, run hot and have poor fuel economy or lack of power in certain road conditions.
    This reason right here is why a well tuned stock engine out performed most hopped up engines in overall performance.
    This was written up then in the early/mid 50s.
     
  4. 53 Ford Coupe
    Joined: Aug 8, 2025
    Posts: 3

    53 Ford Coupe

    So would a Mallory distributor with mechanical advance be a good match for a stock pair of 2 barrels?
     
    Bandit Billy likes this.
  5. I will be watching how this progresses as I am considering going back to a flathead in my 53 in place of the SBF.
     
    Bandit Billy likes this.
  6. joel
    Joined: Oct 10, 2009
    Posts: 2,694

    joel
    ALLIANCE MEMBER

    The Mallory would work pretty well, however I think a converted Delco (Chevy) distributor would be better; you would have centrifugal and vacuum timing adjustment ability.
     
    53 Ford Coupe likes this.
  7. tubman
    Joined: May 16, 2007
    Posts: 8,065

    tubman
    ALLIANCE MEMBER

    I've run both and prefer the Mallory, not because it worked better (they seemed to perform equally) but in the "looks" department. I think that a flathead, with it's "short" advance, doesn't benefit as much from the vacuum advance. Fuel mileage does not factor into my decision.
     
    Last edited: Sep 9, 2025
    Outback likes this.

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