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Old 11-20-2012, 03:52 PM   #1
Dwight Southerland
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Default Re: ford flat top 4 barrel

Jeff -

Not the same. The '67 Ford is a 1.437x1.563 throttle bore carb. Yours should be 1.563x1.686.
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Old 11-20-2012, 04:10 PM   #2
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Default Re: ford flat top 4 barrel

Quote:
Originally Posted by Dwight Southerland View Post
Jeff -

Not the same. The '67 Ford is a 1.437x1.563 throttle bore carb. Yours should be 1.563x1.686.
Dwight is right. Geez...I didn't know Autolite made a smaller 4bbl carb!
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Old 11-21-2012, 07:09 AM   #3
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Default Re: ford flat top 4 barrel

George Thomson who owns Carb. Flow Engineering is a wizard with those
carbs. They take some serious work but are effective when done.
He raced a almost unbeatable 73 Mustang H/SA with a 4300 that kicked
our B*tt continuously If interested ......I can E Mail his # to you.
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Old 11-21-2012, 12:58 PM   #4
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Default Re: ford flat top 4 barrel

But the '73 Mustang has a completely different Autolite which is a spread-bore and around 750 CFM. Not that George can't be effective on the smallest Autolite, I'm sure he can.
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Old 11-21-2012, 03:10 PM   #5
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Default Re: ford flat top 4 barrel

Ok I think we are talking about three differant carbs. here.

In 1967 I believe it was the 4100 Autolite. There was a small one and a larger one.
The 4300 was not a spread bore.
The 4350 was.
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Old 11-21-2012, 08:09 PM   #6
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Default Re: ford flat top 4 barrel

the 4300 came out in 1967 at 448 cfm (somewhere in that range) . after that they had 2 more designs that were larger. a 4100 is a flat top carb where a 4300 kinda resembles a quadrajet. and if you can pm or send that contact info that would be great john. thanks,bob.
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