Need help with engine problem

[drdave69]

I looked for any pinched wires and did not find any. I took the distributor cap off and removed the #1 plug. Bumped the engine around and the rotor correctly points to the #1 plug on compression stroke. I then examined the dampener again and noticed faint lines and numbers on it. Couldn't see them previously with the crusty surface so I sanded it a little and marked the 10 deg BTDC with white paint. It was aligned at about the 12 deg mark so I put everything back together and checked it with the timing light after letting it warm up (wouldn't stay running otherwise). I adjusted it to the 10 deg. Using the electronic timing light I was able to switch it RPM and noticed that it was idling at around 750 rpm but the tach was at 1000 rpm. I assume the tach is off. It will still "run on" when I turn it off and still isn't running very well.

My next plan is to put it on my lift and change the oil (it is due) then swap the 3" side pipes back onto it.