That will depend on what motor, car and very significantly, what YEAR the carb/car/engine is.

I gots access to the 84 camaro 305 info if ya needs it (factory service manual and the car too). I believe it to be stock, but i know the carb is a generic parts store replacement and the engine has been changed...all by the previous owner...

There should be a vac diagram under the hood someplace...