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Old 08-29-2019, 07:01 PM   #12
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Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 2,580
Default Re: Holley 1273-2S carburetor

Frank, the ECZ 4100 you have should also be for a '57 312 Ford. Don't think the T-Bird ever got a 4100 installed on the assembly line.

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