Rebuilding carburetor 1917 model T ford

1950
OFFICERS MODEL SPECIAL 1929
POLICE POSITIVE .38 1922
POLICE POSITIVE SPECIAL & DETECTIVE SPECIAL 1920
NEW SERVICE & SHOOTING MASTER & 1917 1920
1908 HAMMERLESS .25 1918
MODEL 1911 MILITARY 1917
1903 HAMMERLESS .32 1906
"NEW ARMY & NAVY MODELS 1892,94,95,96,1901 & 03" 1905
SINGLE ACTION ARMY & BISLEY REVOLVERS 1864
1849 POCKET (.36 CALIBER)

It sounds like it is starving for fuel when you reach those speeds.I believe it to be the fuel float in the carburetor.A new carburetor is very expensive as with a rebuilt unit.If you are mechanically inclined you can replace the fuel float and needle valve for about $20 or get a complete rebuild kit for about $35 to $40 dollars.If you have ever built a plastic model you should be able to do a rebuild yourself.A good quality kit comes with complete disassembly and assembly instructions with diagrams.Give it a try.

You need to rebuild the carburetor is my opinion based on your symptoms. The carb rebuild kit comes with full instructions and you can get it here.

I suggest visit this link about Step-by-Step-Rebuilding-a-Holley-OEM-4-Barrel-Carburetor.

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You need to rebuild the carburetor. As it is a 1 barrel its relatively easy to rebuild if you can find a kit, but it is the original carb and difficult to find parts. You may also consider buying a Holley 2 barrel carb - it will bolt right on and give you more power, and they are much more common and easier to find rebuild kits and parts. It's possible you may need an adapter plate, depending on the configuration of your intake manifold, but that will be easy to find. You can either shop online or buy from your local auto parts store or high performance shop. That old 1 barrel has had its day and I'm sure it served you well,but I think I would upgrade to a newer carb myself.You may be able to clean it out using carb cleaner spray but it would be hard to clear out that clogged jet that is causing your trouble, and then you will likely tear the gasket when you take the top off that carb.

You can order rebuild kits at your local auto parts store. Tell them the model, and engine size. They will also need some details about your carburetor, such as - 4 barrel or 2? Follow the instructions in the kit exactly, and replace all the gaskets/seals, whether they look like they need it or not.

If you're vehicle is 84 or prior you may have a carburetor, (some models earlier or later by a few years) if you are asking about the van you have in the picture spot for the question that looks like 98-2004 ish Caravan, no way it has a carburetor. It would have a throttle body probably. If that isn't what you're working on you can check for an ID tag on the carburetor and order a new one (or a rebuild kit) and rebuild it or straight bolt on bolt off replace it. Most new carburetors come tuned to stock specs... so you shouldn't need to tune it once its on.

Just buy the Trans Case,if you intend to rebuild the wrecked vehicles trans. Check with a trans shop,as to where they get cores,cases and hard parts,then buy direct from the aftermarket parts supply houses.
Also get an ASTG Repair Book for your model trans.

Go to the parts store and order a rebuild kit,it will have a break down of the carburetor in it,and the adjustments

Go to a junkyard and buy the carburetor off another truck. Parts are not generally available for 29 year old carburetors. Then make one good one out of the two old ones and your kit. If it is a you can probably buy a new carburetor from Holley to fit the truck. They are expensive. Good Luck.