I have emissions/vacuum question.  With so much vacuum operated stuff---dampers---headlights...whatever on my 80 C3...will removing the emission stuff affect those operations at all?  I put a block off plate on the EGR and assume I ahve to jsut plug the vac lines that are associated with that...air pump....other vac parts?  HUH???  Quite a few lines to terminate or fully remove/plug/ reroute....what manual do you reference for that stuff?

Thanks in advance....rear emergency brake rebuild was a snap compared to replacing the heater core and blower....yikes!!

Soup

Does anyone have any idea what each of the vacuum ports do on the front of an 81 carburetor are? I’m trying to figure out what needs to be plugged and capped on the system.

I don't know much about the 81 other than the complicated electronic carb but if you are removing all the emissions junk then all you really need is vacuum to the distributor advance and any PCV hookups.  Usually the power brake booster and the vacuum for the HVAC/Headlight doors comes off the intake manifold.

You could probably could just plug the rest of the ports.