Im sticking a 1990 350 TBI into my 1973 Camaro. I took the air/smog pump off because I dont need it.

Does anyone know which vacuum lines and hoses that I will need to keep?

There also is a large hose that starts at the intake manifold near the distributor which then goes to a plastic thing that has more tubes that are supposed to connect to it. What is this large hose for and will I need it? (Hopefully I wont need it because it takes up alot of space and looks ugly)

 

It most likely controls vacuum to many things.

 

That plastic thing may be your resivour that is needed for the blend air doos and cruise control. It needs a vacuum source and branches off into the items.