found three vacuum lines in a group coming out of my firewall on the passenger side that are not hooked to anything . Could be causing a problem, but don't see them on my 302 vac diagram. Anybody know off the top of their head?
OK, I'm going out on a limb and trust my memory. On my '72, one goes to the vacuum tree on the manifold (its the source of vacuum for the heater/ac controls) and the other two go to the heater control valve on the firewall. They should be color coded.. Shouldn't hurt to have them unplugged if all the ports are plugged on the engine.
Thanks!! I'm gonna try plugging them for now. Don't need heat or a/c I'll figure it out when I'm cleaning up the bay
