I have a 91 Z28 that has been sitting out at my families garage since 2006 with a blown engine with the lack of funds to have rebuilt. Scored a free fully rebuilt 305 (the original size engine to begin with) so I started disassembly to do the swap. While pulling off what I believe is part of the vacuum lines a three way plastic part on the passenger side of the vehicle broke one of the connector ports that the hose connects to. I have no idea the part description so I can replace it and any suggestions or facts on what the part is called would be appreciated.

 

Welcome, Wolf.
You could probably take a picture of it and show it to the parts person for identity.
Or, maybe visit the Help Aisle at the local parts store and pick up some T's and couple the hoses down the line.

Make pictures/drawings of all circuits like this one, wiring, hoses, and most anything you take apart and use them for future use/reference. A logbook comes in very handy.

 

post up a picture and it will make it easier for us