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03-25-2024, 12:32 PM | #1 |
Junior Member
Join Date: Dec 2023
Posts: 10
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Zenith carburetor
what does the embossed number 7 on the throat of the Zenith carburetor signify?
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03-25-2024, 12:55 PM | #2 |
Senior Member
Join Date: May 2010
Location: So Cal
Posts: 8,802
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Re: Zenith carburetor
Are you sure it's not a Z?
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03-25-2024, 02:29 PM | #3 |
Senior Member
Join Date: Jul 2018
Location: Daniel Island,SouthCarolina/Knoxville, Tennessee/Sanibel Island,Florida
Posts: 302
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Re: Zenith carburetor
I thought is is a "2"
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03-25-2024, 03:13 PM | #4 |
Senior Member
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,836
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Re: Zenith carburetor
It's a Z.
Manufactured by Zenith (H for Holly and no mark for Ford if it's a Zenith-3). Zenith was the design holder for the carburetor, but they licensed it out to be manufactured by others to meet Ford's demand.
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Jim Cannon Former MAFCA Technical Director "Have a Model A day!" |
03-31-2024, 01:43 AM | #5 |
Senior Member
Join Date: May 2010
Location: Lake Elsinore, CA.
Posts: 414
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Re: Zenith carburetor
That's not the whole story. Zenith 1: Made by Zenith. Zenith 2: made by Holley. Zenith 3: Made by Ford. All internal parts interchangeable. Numbers and stampings on Carburetors changed through the Model A era. The Model A Judging Standards has a comprehensive chart on the evolution of the Zenith style carburetors. Well worth the research. Other manufacturers such as Tillotson have their own characteristics of which I am not privy.
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03-31-2024, 02:56 PM | #6 |
Junior Member
Join Date: Jan 2011
Location: Spokane, Washington
Posts: 27
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Re: Zenith carburetor
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Volume 61 issue 6 (March/April 2017) through Volume 62 Issue 4 cover the varieties of Zenith and Ford. Volume 67 Issue 4 (Nov/Dec 2022) through Volume 68 Issue 1 cover the varieties of Holley. I was able to expand on details that I could not include in the Judging Standards in these series of articles. I am sure a club member near you would share copies with you. Enjoy! |
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