4300 motorcraft carbs

Sonic Silver wrote: FSJunkie wrote: I found out the hard way that the screw in the end of the choke shaft is left-hand thread. Sheared one off and had to find another. I gave one to somebody here on the forum a couple or three years ago. Was that you?

Yup! Thanks.

The problem is that when someone today sees one of these carburetors, it's unlikely to be virgin unless an original owner can swear and remember 100% that no dealer nor other mechanic has done carburetor work on it, and that's not likely seeing as how humans simply don't normally have that ability (referring to legit psych classes I've taken over the years)

When you buy a remanufactured carb, especially these 4300s, here's what happens - the remanufacturer or rebuilder gets in large wire bins of the 4300s, Ford, Lincoln, Mercury, AMC, etc. - they are all stripped down and put into other baskets and sent through the cleaning process.
On the other end, people pull parts out and make carburetors.
IF they are making one for, just for sake of example, a 1970 AMC application, they may end up putting a Ford body on the carburetor - and they fill the PCV port with a filler, epoxy and leave the nipple off. It will have the drilled hole, but will be plugged. Genuine AMC carburetors don't have that hole through at all, reman parts may have that hole filled since AMC used their spacer for the PCV port.
Same for the "air horn" - you will have a carburetor like Chuck has - the hot idle compensator.
Yeah, that was covered in college, and then likely was covered again in later classes I took as part of the company-covered continuing education the boss sent us to for GM, Ford, etc. - where they covered changes or bulletins and so on.
Rich has it nailed 100%.
It's also in the Ford books and other info I have from the Sun fuel systems certification schooling I went through.

Rich, I have a shelf full, well, DID have a shelf full, now it's more like a bench top, boxes, buckets, etc. of carburetors and parts, and have several 4300s, some are AMC, some are a mix, some are carburetors that were sold for use on AMC but are reman and I discovered were thus a mix of parts, right and wrong, correct and not so correct (such as plugged PCV ports................

BTW - Chuck's carburetor tag should be correct.   ;-) 
I happen to know the source.

Purpleheart wrote: Does anyone know where to get the spacer under the 4300 carb that has the nipple for the pcv  ? Paul

I can't tell if the first number is a 8 or 3, but 3 is 1973, A is automatic, 4 is 4 barrels,all this is explained an a 73 TSM also