Its an 84 and it also has the sticker. Most the emissions stuff has been torn off by the previous owner so im hooking back up what needs to be there for the visual part. So im not trying to do it in oe fashion just currious if my logic is sound as to if the way i want to run it will work
If this is just to pass visual, you could probably put a slug of something like steel rod or ball bearing into the hose and push it in far enough that you could still seat the hose on the carb fitting. Just need to seal the hose so vacuum doesn't get through it. You definitely don't want something that will fit through the vacuum port on the carb though.
If it ran ok before you tried the EGR, then terrible, are you sure you just didn't foul the plugs? If it will run good enough, a high RPM pull under load normally gets them hot enough to "burn off" the carbon that forms from idling poorly.