it sounds like a bad ignition module.
Assuming it's a base Camaro, they had 170 hp
The base 305 had a 4bbl carburetor
into the throttle body/ carburetor.
Electric
Usually a Rochester Quadrajet.
See Chilton's or similar
It is inside the distributor.
No, you don't have to change to the new distributor if you don't want to.
It is inside the distributor
It is inside of the distributor.
What about the timming
probabaly a bad distributor. replace distributor and wires and should be fine.