Who knows 2 barrel carbs ?

pearljam724 said
I don’t know buddy. No vacuum reading at vacuum advance port or under fuel inlet. There is a Y adapter inserted into the stock manifold that the brake booster connects to and of course I have vacuum reading there. Nothing on carb itself. There’s also a port on the carb that the stock egr valve attaches to. Vacuum no where on carb. Weird

Some years used venturi vacuum to purge the vapor canister or to signal the EGR thru a vacuum amplifier that looks like a small ball about 4inches in diameter, usually mounted on the valve cover.

AJ/FormS said
The full time port should have vacuum all the time..... unless the wrong gasket is installed or unless it was installed backwards.

You may have to separate the baseplate off to verify the gasket is correct.

OOPs, Pishta already straightened it out.