The 58 Thunderbird was not wrecked but it must have been setting in the salvage yard for 20 years.  The lower quarters were rusted out along with the floorboards and the inside really trashed but it is a complete car....well except for the carburetor.  My carburetor also has the spring loaded trap door in the choke plate so I'm also thinking it's an original 1.12 verturi carburetor.  I emptied my mail box, thanks for letting me know.  

buddy

The number 7AV D isnt much help.  The pre 1960 2100s/4100s didnt have tags.  Location of the ID number stamp was also different, most often on the side of the float bowl.  The edsel carb I mentioned didnt have a traditional ID #, ex. C2TE A.  It's number is 5752307.   An easy to spot difference on the early Edsel unit was a spring loaded "trap door" mounted in the choke blade.  It sounds like you very well may have the original.  As for venturi size, 1.12 almost guaranteed.

I noticed on the site mentioned above the same trap door is in the rare 1958 1.19 venturi choke.  So you may find the same.

What was the condition of the T-bird?

And Buddy, your mailbox is full.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

I robbed my 4100 carburetor off a 1958 or 59 salvage Thunderbird which appeared to have a 352 engine.  Everything I've read says 4100's are identified on the right front side of the fuel bowl with a 1.08 or 1.12 stamped on it but mine has the letters EDC and underneath that is  7AV  D    My question is, is this a 1.12 venturi and I wonder if it was the original carburetor on the Thunderbird. 

buddy

I found this guy's web site to be very helpful.  If you have the tag still on the carb you can identify what engine and car it came on.

http://www.carbkitsource.com/

I also bought a kit from him which was fully satisfactory for the 1.12 4100 I put on my truck. The engine it came from was a Merc 352 FE. The Truck was a 301 cid motor and it ran fine with the 1.12 venturis.  There was a slight hesitation when stepping on the gas which I attributed to a very slight amount of lost motion in the link to the accl. pump.

Doug T

The Highlands, Louisville, Ky.

Here is a good one:  http://mustangtek.com/4100/ford4100.html 

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

And if you consider only unmodified carbs in that test, carbs that you and I are more likely to use, they placed even better.



Are there any good resources on the net for identifying these? I'd still like to know what the specific application is if the info is around.


Lawrenceville, GA

I had a 4100 on the 390 in my Fairlane back in the '80s and it ran strong all the way to 6500. I did not check the venturi size back then and the car is long gone.  It might of been a 1.19 but I think it more likely the 1.12.  I switched it over to a 406 3x2 set up that I bought at the local speed shop (used for $150 with linkage and air cleaner) it looked cool but I think the single 4100 ran stronger, it certainly didn't hesitate when you "stomped" on it.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Good info Paul.  I see where Buddy is considering a '59 4100.  The early booster designs of 2100 and 4100 seem to have been significantly improved over a few years.  I am working on a 1958 Ford/Edsel 2100 for 292, and it has a booster with quite a few antique features compared to those just a few years later.  A 1964-1966 4V carb for 352 may be a better bet for satisfactory performance.

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.

I have a 1.08-4100 I hope to install in the near future. However just for info, according to our moderator Ted, in an article in YBM, issue #97, Mar.-April 2010, an independant test of Autolites showed them to flow somewhat less than originally thought. The 1.08s apparently flow about 440 cfm & the 1.12s about 520 cfm. However, in Ted's extensive testing of 16 carbs, (some stock, others modified) in the same issue, on his well known test mule, a 1.08 finished 5th & a 1,12 finished 8th.

Paul

Buddy, you are likely going to get a chance to try it out before me, so make sure to give us some feedback .

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.