318 2bbl carb replacement

[Johnny71dusty]

I got this knock off carb . It has a Chanel under it for looks like a O ring type gasket ( see photo ) . The older eBay carb that on it doesn't have it though they look nearly identical otherwise . Does anything need to be put in that Chanel ? This carb was sold to me from Napa as a stock replacement for 73 318 challenger . But Original didn't have it and neither did the ebay carb

 

[toolmanmike]

Just a passage way. Not for a O ring.

 

[Johnny71dusty]

Ama

Just a passage way. Not for a O ring.

AmaZing thank you

 

[Johnny71dusty]

Ama

AmaZing thank you

Why do some carbs have two of these screws and some only 1 ? Why fuel - air mix ? Why are there two ?

 

[Johnny71dusty]

Pic , where is a good starting point ? All the way in and 2 Full turns out ? I see lost people giving lots of different numbers on this . Keep in mind this is ok my slant 6 now as no other options out there so I used the adapter and a 318 2bbl . Can't run a air filter until I make a housing that drops Filter down 2" but I'm working on it.