Am I able to just block off vacuum lines????
 

I'm in the process of dropping a thirdgen 86 305 tpi into a 4th gen Camaro and we're temporarily just trying to get this running by mocking everything up but do I need vacuum or can I just block things off temporarily because right now it starts initially and dies imediately because fuel is cut off. I'm wondering if this is vacuum related as the fuel pressure regulator I'm assuming just being plugged into the intake might not be enough.