All right, I worked on this today.

I replaced my hot wire going to the distributor with one I order. It had the GM plug so I could plug it in more securely.

I reset the distributor with # 1 at TDC on compression stroke.
The rotor points at # 1 cylinder. I also lubed the advance while I had it off.

I checked the gap on all my plugs and they are at .045

I checked firing order 18436572 clockwise on cap.

I bought a new timing light because I thought the old one was bad. When I hooked it up to number 1 sparkplug wire and crank the engine the light is erratic. I do not see my timing marks.

So I hooked it up to plug wire # 3 the light worked perfectly and there were my timing marks.

What does this mean ? and how do I fix it ?
Thanks