ford flat top 4 barrel

Dwight Southerland · 11-20-2012, 03:52 PM

Jeff -

Not the same. The '67 Ford is a 1.437x1.563 throttle bore carb. Yours should be 1.563x1.686.

Jeff Lee · 11-20-2012, 04:10 PM

Quote:

Originally Posted by Dwight Southerland

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!

GTX JOHN · 11-21-2012, 07:09 AM

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.

Jeff Lee · 11-21-2012, 12:58 PM

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.

k.pascoe · 11-21-2012, 03:10 PM

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.

partsbob67 · 11-21-2012, 08:09 PM

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.

11-20-2012, 03:52 PM	#1
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,000 Likes: 64 Liked 775 Times in 193 Posts	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.

11-21-2012, 07:09 AM	#3
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,732 Likes: 2,797 Liked 2,477 Times in 697 Posts	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.

11-21-2012, 12:58 PM	#4
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	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. __________________ Jeff Lee 7494 D/S '70 AMX

11-21-2012, 03:10 PM	#5
k.pascoe Member Join Date: Aug 2008 Location: Fenton, Missouri Posts: 107 Likes: 0 Liked 0 Times in 0 Posts	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.

11-21-2012, 08:09 PM	#6
partsbob67 Member Join Date: Apr 2005 Location: rohnert park,ca Posts: 414 Likes: 11 Liked 79 Times in 11 Posts	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. __________________ bob beals 7244