Vacuum on 1968 GTS 340 4 spd.

The motor ran good before the rebuild. The dist. is the same along with the orange box ignition. I did inspect when this began . Bought new cap rotor and wires. Same coil. I can say I've proven intake but my vacuum gauge was messed up. My gut tells me intake. I might pull it and go from there or I might register it and bring it somewhere just not sure yet.