I have a 360cid in my 76 f100 4x4, I bought a rebuilt carb online with no pic available, its a '73 2 barrel, but the original 76 2 barrel does not look like it. On the 73 there is no place to mount a choke pulldown and it doesn't have a dashpot on it either. On the top of the 76 there is nothing but the butterfly, on the 73 on the top behind the butterfly there is another valve or pump of some sort made into the top, it doesn't have any hookups (electric, vacuum, etc..) but it may be an internal vacuum. they both have an electric choke,
the place where the stud that holds the air filter on is not even close to the same size hole and it doesn't have threads in it, is there another air filter that fits the 73?

 

A 73 2-barrel is a Motorcraft 2100 series carb, whereas a 76 2-barrel is a Motorcraft 2150 series carb. One of the biggest differences is the choke pulloff. On 2100 series, the pulloff is mounted vertically on the air horn. This is the "valve" you are seeing on the top of your 73 carb. It sources vacuum internally. On 2150 series, the pulloff is mounted horizontally, external to the carb itself.

You can still make this work. Since the 73 carb is a 2100 series, it has the choke pulloff already mounted in the air horn (as I just described) so there is no need to mount the pulloff from your 76 2100 series carb. The pulloff clearance adjustment is the same between the two carbs, except the set-screw on your new 73 carb is under the air horn.

You may be able to get away without the dashpot on your 73 but if you need it, you can transfer it over from your 76. The short answer to all your questions is you bought the wrong carburetor, but with what I mentioned you can make it work. For the air cleaner stud, you're just going to have to find an all-thread that fits and make do.

By the way, don't expect to bolt on a rebuilt carb you bought online and be done with it. Rebuilt carbs through parts stores and online bargain sites are about the worst way to get one, sorry to say. You have no control over the quality of the rebuild and it's put together by some warehouse outside of the country by someone who probably doesn't pay as much attention to detail as you would had you rebuilt it yourself. You can make it work, but just put some time aside to dial it in properly.

 

Thanks, the carb was rebuilt by "The Carburetor Exchange" in southern California, they have been doing this "as the website says" for 41 years and that was the only one for a 360 they had in stock, I'm going to put the dashpot on it anyway just in case, the carb came bench tested and the bolts that can be adjusted have a little dab of something on them to keep them from moving without extra force.

 

I put the carb on last night and that marked the end to 6 months of trying to find out the problem with my truck.

 

Glad to hear!