Guys,
I have this 66 F250 with a 68 390 and a 2 barrel Autolite 2100 with an electric choke. What is the threaded vacuum inlet on the back of this choke and what is it supposed to hook up to? It is making a wonderful whistle sound. Did that originally go to the stock air cleaner? Should I direct this somewhere? Thanks for any help. I just replaced a rusty gas tank and had this carb rebuilt. But I originally did not remove the carb so this choke is a mystery.

 

There are 3 possiible scenarios, because there is more than one type of 2100 carb.

1) Choke housing has a saucer plug that commonly blows out. Housing then begins to whistle Dixie.

2) Plastic choke cover has a metal adapter w/a threaded hole at its center. Copper tube using nuts and ferrules connects to choke cover, then to a nipple on the exhaust manifold.

3) Choke housing has a threaded hole on one side. See above: Copper tube using and etc.

What part of LA are you located in? I could swing on by, take a look-see.

This copper tube is available as a 'fitz-all' kit (includes nuts/ferrules, nylon insulator) from autoparts stores. Ford used to sell a similar kit, but it's obsolete.

But the thing is, 1961/66's do not have an electric choke, came with a choke cable. So, have none of this jazz, or any place to connect the tube on the exhaust manifold.

Unrelated to the above: 1968/72 F100/350 w/FE engines: The air cleaner has a snorkle on it that bolts on. At the bottom of the snorkle is a hole that the hot air tube that's bolted to the right exhaust manifold fits into.