ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1967 Mustang => Topic started by: socalgt on June 12, 2015, 01:20:23 AM
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Is the original Autolite carb on a '67 "A" code a 4100 or 4300? The 4300 carbs I've seen have the fuel inlet on the left side(driver's view) which doesn't line up with the pump to carb steel fuel line....whereas the 4100 inlet is on the right side, which does.
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I believe 4300's were introduced in 1968.
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Some early 67s had 4100s but most had 4300s. The were a lot of problems with the 4300 so many cars were changed.
Marty
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Some early 67s had 4100s but most had 4300s. The were a lot of problems with the 4300 so many cars were changed.
Marty
The best part about a 4300 is that it's easy to switch it out for a 4100. ;D
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I'm not aware of any 4100's used for 1967, with the exception of the few 67' hipo's (489 units). 2100's were the main stay for the 2v cars and 4300's were used for the small block 4v cars, "A" codes in 67-68 . The same goes for Cougars and I think some of the part numbers cross over between the two lines. Big blocks received the Holley 4150 carbs that I believe were rated around 735cfm??
I have also heard of issues with the 4300's including "flat spots" in acceleration. But, some builders have supposedly worked these issues out. Pony carbs was one that claimed this but I do not know of anyone to back this up.. (and they have been out of business for sometime now). I have numerous Mustang specific 4300's as cores because face it, many folks want the original set-up now a days and they seem to be holding their value probably for this reason. I'm sure a lot of folks in the day replaced the 4300's with over the counter Holley's (600 cfm's)... Hope this helps
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How does the pump to carb fuel line attach....the only fuel line I see available for a '67 289 is the one that will end up lined up with the wrong side of the 4300 carb, which has the inlet on the opposite side. I have a 4300 for my '67 A code, but don't see how to get from the end of the fuel line to the carb inlet.
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4300's have fuel inlet on the drivers side of the carburetor, behind the distributor. The fuel line runs on the drivers side of the distributor (LH drive cars) , behind the distributor then angles up with a bulb or "barb" on the end of the tube. ( The earlier 66 style 4100's have the fuel inlet on the passengers side, same fuel line that the 1967, 2100 [2-barrels] used) I'm looking right now at a A-code 4300 for a 67 289 and I know I have seen the fuel line available reproduction before, but I cannot remember where right now.
How does the pump to carb fuel line attach....the only fuel line I see available for a '67 289 is the one that will end up lined up with the wrong side of the 4300 carb, which has the inlet on the opposite side. I have a 4300 for my '67 A code, but don't see how to get from the end of the fuel line to the carb inlet.
On the fuel pump, it connects with a fitting. On the Carb side, there is a short piece of 5/16" fuel line and two pinch clamps, and connects to a carb-mounted Fuel Filter.
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Hard for me to find pics on Google of a 67' "A" code engine right now. 1967 -68 would have been no doubt identical but since this is a concourse site I assume you only want 100% correct info for the 67' A code. I have however, found a pic of a 68' J code. My opinion is that this would be the same gas line you need. In 68' it would have been a 302 with a 4300 carb (J code). I'm sure one of the members on this site has a pic of a survivor car (engine) for your reference. The major parts suppliers should have what you need? Try Virginia Mustang or NPD,etc. Maybe even West coast Cougars could help since the engines were pretty much interchangeable during these years. Take a look at the pic supplied. It appears the 4300 used an inline filter and small section of hose between the carb and fuel line. You could also try and move this post to the 67-68 section (or start a new?) where you could get a more definite result and quicker response. Hope this helps
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Just noticed 67gtasanjose responded as well...
+1 to his response. Seems we are on the same page. ;D
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That does appear to be the pump to carb line I need...I didn't see that available under '67 289 fuel line...I'll check under '68 and see if I find it there. Thanks for the picture...it's what I needed. My 4300 is dated correctly for my car so I'll try to use it...although I've read that it's a problem carb..
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Before I install the correct('68 style)pump to carb for the 4300.....am I correct that an April '67 San Jose built 289 A code would in fact have had a 4300? The carb is dated properly for the car, I don't have enough previous owner history to know it is original to the car.
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Yes, starting in 1967, Ford installed Autolite 4300 carburetors on all 'A' code or 289-4V engines.
Note that there are 4 different numbered 4300 carburetors on a 1967 Mustang (or Cougar). 49 state automatic and 3/4 speed manual transmissions, and California emissions automatic and 3/4 speed manual transmissions.
As mentioned previously, K code or 1967 289HiPo's still got Autolite 4100 carburetors.
Shelby's GT500 all trans = Holleys
GT350 w/4 speed = Holley
GT350 w/auto = Autolite 4100
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krelboyne, is it also correct to say that a cougar fuel line is identical to a Mustang for this year/application?? That's what I have always found to be true.
Also, socalgt, what trans is original to your car and what is the stamping/tag on your carb?? I believe that states with emissions (California) carbs had "brass" tags while other carbs had the standard aluminum tags. Looks like your tag is indeed brass. I know this holds true for earlier 4100's and I think it's the same for 4300's.
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The carb tag and stamp read C7DFD
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Yep, so C7DFD is for a 1967 Mustang ,289, AT with emissions. If your car is an auto than that is the exact carb for you! 8)
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Unfortunately I incorrectly said my car was a San Jose built...it was Metuchen...so, the carb is not for my non-emission car...at least I know now. Maybe someone who needs it will read this post and could use it. I'll be looking for the correct carb now, which it appears is the 4300..although with all the negative comments I've seen regarding it, maybe I'll break the pattern of originality and go with the 4100....I like to drive my cars too much to have a "trouble carb"
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krelboyne, is it also correct to say that a cougar fuel line is identical to a Mustang for this year/application?? That's what I have always found to be true.
Correct, same fuel line from pump to carburetor.
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Unfortunately I incorrectly said my car was a San Jose built...it was Metuchen...so, the carb is not for my non-emission car...at least I know now. Maybe someone who needs it will read this post and could use it. I'll be looking for the correct carb now, which it appears is the 4300..although with all the negative comments I've seen regarding it, maybe I'll break the pattern of originality and go with the 4100....I like to drive my cars too much to have a "trouble carb"
Private message sent (last night). It turns out I have a 49-state non-emmission 4300 for a 67 289 and could use a Thermactor equipped 289 4300. I will verify things later this morning and report back. Maybe a perfect solution.
FWIW, I also have a 4100 prepped to use on my 67, incorrect as it would be for my application, I wanted it to run good as a driver for a while. (understanding also that there were many problems with the 4300) I DID want to have a 4300 around at least as a wall flower, for the sake of correctness (show purposes) and the 49-state version was close enough for me, to accomplish that purpose. Yours would do this better and if nothing else, the one I have would be correct for your application too! No tag on mine though, but number's do confirm it a 67 289 non-emmissions for auto trans.
Richard
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Since no one mentioned it, the July 2015 issue of Mustang Monthly has an article on rebuilding and tuning 4300s. Also talks about the development of the 4300 and their characteristic problems. The article is also online:
http://www.mustangandfords.com/how-to/engine/1504-how-to-rebuild-the-autolite-4300-carburetor/ (http://www.mustangandfords.com/how-to/engine/1504-how-to-rebuild-the-autolite-4300-carburetor/)
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Some early 67s had 4100s but most had 4300s. The were a lot of problems with the 4300 so many cars were changed.
Marty
I've looked at countless pictures trying to find a '67 289 A code with a 4300 carb to see the routing of the fuel line(opposite side of the distributor as for a 4100) and haven't found a single one.
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I've looked at countless pictures trying to find a '67 289 A code with a 4300 carb to see the routing of the fuel line(opposite side of the distributor as for a 4100) and haven't found a single one.
Pictures can be a challenge - normally air cleaners, AC pumps, brackets and such in the way. Also always seem to be one or two owner added twists and bends that have been added for one reason or another
Not the best but something
(http://www.concoursmustang.com/forum/gallery/4/6-130615175749.jpeg)
(http://www.concoursmustang.com/forum/gallery/4/6-130615175657.jpeg)
(http://www.concoursmustang.com/forum/gallery/4/6-130615175758.jpeg)
And yes the top section runs down the drivers side for the 4300 rather than the 2100 side (passenger)
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Here is some Ford documentation on the 4300
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you sure about that attachment??
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Proving difficult to find the correct fuel line.....most vendors supply the same line that is used on '66 4100...which, of course, won't work. I ordered one for a '68 small block...it comes up the correct(driver's)side as illustrated, but won't line up with the fuel pump...guess I'll try a third vendor, but none of them appear to carry the correct '67 fuel line for the 4300...almost as if they think '67 cars had still had the 4100.
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you sure about that attachment??
I was until you mentioned it. The file has been corrected. My apologies to the 11 that downloaded the wrong file.
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I have tried every vendor that advertises fuel lines for 67 mustangs....not one sells the line that will come up on the driver's side to correctly attach to the original 4300 carb....am I missing something here....can there really be no supplier/manufacturer that sells/makes this item?....has everyone replaced their original 4300 with a 4100???
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I have tried every vendor that advertises fuel lines for 67 mustangs....not one sells the line that will come up on the driver's side to correctly attach to the original 4300 carb....am I missing something here....can there really be no supplier/manufacturer that sells/makes this item?....has everyone replaced their original 4300 with a 4100???
Did you try WCCC?
http://www2.cougarpartscatalog.com/coc1009.html (http://www2.cougarpartscatalog.com/coc1009.html)
Listed as: "Reproduction Stainless Steel Fuel Pump To Carburetor Steel Tubing for the 1967 - 1970 Mercury Cougar with the 289 / 302 and Autolite 4300 4 Barrel Carburetor"
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I will today....thanks.