With the vacuum line(s) dis-connected from the distributor
and plugged up, the engine timing should be set at 4 degrees before top dead center idling at 650 rpm, and if it has California emissions then the ignition timing should be set at 12 degrees before top dead center while idling at 700 rpm. If the timing specifications listed on the vehicle emission label are different from these specifications then the specifications listed on the emission label are to take precedence.
Use a timing light to check the ignition timing, (and be sure that the timing light is connected to the #1 spark plug wire) and if the ignition timing is not to specifications then loosen the distributor hold down and turn the distributor until the timing marks move into position and are aligned to the timing specification, then tighten down the distributor hold down and then re-check the timing to be certain that the distributor did not move out of timing when the distributor was tightened down, then re-connect the vacuum line(s) to the distributor and re-set the engine idle back to where it was if it had to be changed. Be sure that the timing scale and marker down on the harmonic balancer/crankshaft pulley and the engine block are clean and they will show up well, and you can also mark them with chalk so the engine can be timed easily.
If you connect the vacuum line(s) to the distributor and the engine runs poorly then all of the vacuum line(s) to the distributor will have to be checked and then connected to their proper vacuum source.
If the ignition wires are leaking secondary voltage you might get a good secondary voltage shock if you touch the distributor to turn it. Let me know if you need help connecting and using a timing light, or if you require any further assistance.
Here is a firing order diagram to help assist you.