The Ford Barn

PaddyR · 03-25-2024, 12:32 PM

what does the embossed number 7 on the throat of the Zenith carburetor signify?

Bob C · 03-25-2024, 12:55 PM

Are you sure it's not a Z?

fried okra · 03-25-2024, 02:29 PM

I thought is is a "2"

Jim/GA · 03-25-2024, 03:13 PM

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.

fourfords · 03-31-2024, 01:43 AM

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.

Steve Schmauch · 03-31-2024, 02:56 PM

Sponsored Links (Register now to hide all advertisements)

The complete story of identification of all Zenith, Holley, Ford and early cast iron after market carburetors used on Model A's is chronicled in The Restorer magazines published by the Model A Ford Club of America.

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!

03-25-2024, 12:32 PM	#1
PaddyR Junior Member Join Date: Dec 2023 Posts: 7	Zenith carburetor what does the embossed number 7 on the throat of the Zenith carburetor signify?

03-25-2024, 12:55 PM	#2
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,754	Re: Zenith carburetor Are you sure it's not a Z?

03-25-2024, 02:29 PM	#3
fried okra Senior Member Join Date: Jul 2018 Location: Daniel Island,SouthCarolina/Knoxville, Tennessee/Sanibel Island,Florida Posts: 292	Re: Zenith carburetor I thought is is a "2"

03-25-2024, 03:13 PM	#4
Jim/GA Senior Member Join Date: May 2010 Location: Young Harris, GA Posts: 1,821	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. __________________ Jim Cannon Former MAFCA Technical Director "Have a Model A day!"

03-31-2024, 01:43 AM	#5
fourfords Senior Member Join Date: May 2010 Location: Lake Elsinore, CA. Posts: 414	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.

03-31-2024, 02:56 PM	#6
Steve Schmauch Junior Member Join Date: Jan 2011 Location: Spokane, Washington Posts: 21	Re: Zenith carburetor Sponsored Links (Register now to hide all advertisements) The complete story of identification of all Zenith, Holley, Ford and early cast iron after market carburetors used on Model A's is chronicled in The Restorer magazines published by the Model A Ford Club of America. 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!