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1970 Torino GT 429 Carb Question

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opschief3537 View Drop Down
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    Posted: 02-March-2018 at 5:42AM
Greetings All,

I'm restoring a 1970 Torino GT 429 w/C-6 and A/C. She is an N code example and I need some expertise identifying the correct carb. From what I have determined (from a few Ford websites) she came from the factory with an Autolite 4300 series carb. I'm not exactly sure what code carb though, because I've come across two different codes; D0OF-E or a D0AF-AM. If anyone can provide some clarity, that would be excellent! 

 Thanks and have a great weekend all!

Rod
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 6:51AM
The D0Of-E is a rochester quadra jet spread bore carburetor. It came installed on most 1970 429 CJ engines. It is not an autolite 4300 carburetor.

Edited by dave302 - 02-March-2018 at 7:35AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 6:54AM
In the picture below, the D0Of-E carb has a spread bore venturi pattern. Small primary venturies and larger secondary venturies.


Edited by dave302 - 02-March-2018 at 7:10AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 6:58AM
The D0AF-AM is a ford autolite-motorcraft 4300a carburetor. It came installed on some 429 n code engines in 1970. It has a square bore venturi pattern, which means that it has similar sized primary and secondary sizes.

Edited by dave302 - 02-March-2018 at 7:36AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 7:00AM
There is a picture below of a D0Af-AM square bore carb gasket.
 


Edited by dave302 - 02-March-2018 at 7:13AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 7:04AM
The autolite-motorcraft 4300-A carburetors came with two different primary venturi sizes. A size 1.01" venture was installed on some 1969 351W engines, and some 1970 and 1971 351C 4v engines. The 1.25" venture size carburetors were installed on the 1970 429 n code engines.

Edited by dave302 - 02-March-2018 at 9:47AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 10:20AM
There is also the motorcraft 4300D carburetors. They were originally installed on the 1972 through 1974 351C Q code CJ engines. They have a spreadbore throttle bore design.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 10:23AM
There is a picture below of the motorcraft 4300D spreadbore design. It is different than the Rochester quadra jet spread bore design.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 10:28AM
A seller might be advertising that they have a motorcraft 4300 carburetor for sale, but it might be a motorcraft 4300D carburetor. It can be difficult to find a way to adapt the 4300D carburetor onto a square bore intake manifold. You probably have a square bore throttle bore pattern on your N code intake manifold. There is a picture below of a square bore intake manifold throttle bore pattern.


Edited by dave302 - 02-March-2018 at 10:32AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote opschief3537 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 12:01PM
Thanks for the education Dave!

So aside from the D0OF-E, Rochester quadra jet and the Autolite-Motorcraft 4300-A, D0AF-AM, was there any other carburetors used on the 1970 Torino GT, N code 429, Automatic with A/C that I can continue to search for?


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Big Bird Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 1:12PM
Some early 429s were available with a 2bbl...
The above post should be read in a "Grumpy Old Man" voice.
Almost forgot: "Get off my lawn!!!"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dave302 Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 1:38PM
The D0OF-E Rochester quadra jet carbs were used on the 1970 C Code 429 cobra jet engines and they were probably also used on the 1970 J Code 429 cobra jet torinos with the ram air option. I have never heard of the ford factory installing them on the 1970 N code 429 engines. There might be an adapter plate that you can use to install the D0OF-E onto your engine. But the Autolite-Motorcraft 4300-A, D0AF-AM would be more of a direct fit onto your intake manifold if you have the 4 barrel square bore pattern on your intake.

Edited by dave302 - 02-March-2018 at 2:01PM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 02-March-2018 at 2:36PM
opschiefe3537 what intake manifold do you have, if i missed it ?

the Ford Rochester Quadrajet is very rare 1 year only IIRC, the 4300-D is a spreadbore but came later model years, yes there were 2bbls even if Chilton/others don't list the option

if you have a Holley 4150 pattern square bore intake, measure the throttle bores because some Holleys have larger diameter throttle blades and they won't open all the way

http://www.championcarburetor.com/7074-motorcraft-4300a-carburetor-600-cfm-4v-remanufactured-p-10694.html

probably pretty much the same carb you'd get from Rockauto
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Post Options Post Options   Thanks (0) Thanks(0)   Quote opschief3537 Quote  Post ReplyReply Direct Link To This Post Posted: 03-March-2018 at 1:46AM
Thanks for all the help guys!

The build sheet and Marti report show that she was an N code ordered with a 429 4V. She was bucked May 7, 1970 and actually built May 12, 1970. 

I'm gonna search for an original 4300-A, D0AF-AM carb. 

Question, as I search for a date code correct carb for my Torino, would a Feb to Mar dated carb be correct? I thought I read that engine parts should be dated 60-90 days before the actual build date of the car?

 Have a great weekend.

Rod


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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 04-March-2018 at 3:07PM
I checked the Ford Master Parts catalog.  It lists a bunch of carbs for the 429 Torino's (N-code).
 
C6 Trans and Imco - D0AF-K, AG, AM, AN
 
I know my car was build the end of march, most of my engine parts are dated sometime in February.
 
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote opschief3537 Quote  Post ReplyReply Direct Link To This Post Posted: 05-March-2018 at 1:53AM
Thanks Vince!

Are all of those carb codes correct for an N code, C-6 with A/C?

Rod 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 06-March-2018 at 6:46AM
Originally posted by opschief3537 opschief3537 wrote:

Thanks Vince!

Are all of those carb codes correct for an N code, C-6 with A/C?

Rod 
 
According to the parts catalog, those are all correct.
 
There is only two listings in the catalog for the 429 N-code engine. One is for the automatic (as I listed) one is of the 4-speed.  It does not specify with or without A/C in either listing.  The CJ cars used different carbs depending if A/C or not.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 06-March-2018 at 9:52AM
rear gear ratio may play into the A/C or not thing, and thus the carb thing

a car spec'd with a performance rear gear may've got a larger venturi carb


Edited by Rockatansky - 06-March-2018 at 9:54AM
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rockatansky Quote  Post ReplyReply Direct Link To This Post Posted: 09-March-2018 at 2:03PM
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