you descibed it perfectly.When the engine is hot, it barely turns over. With a jumpstart cable it behaves like normal. The battery is a good one, but I do not know the specs. I will check!
The next check will be all the ground cables. Couldn't I make a test by using a jumpstart cable when it's hot and hardly turning over? If it starts then without any problem, it must be a ground problem.
When I bought the car in 1993 it had the original Rochester 2-barrel-carb attached. Worked well and the car had really a strong performance with it. During the first "rebuild" they told me, the carb is worn and they changed it to an 650 Edelbrock. Now the mechanic told me, that this Edelbrock has a problem and should be replaced. So I have a brandnew one on it.
The idle goes down slow. The engine fights stopping, but the revs go lower and lower until it quits. How can I check the choke? I didn't read my regular idle, because I do not have a tach. Fuel pressure is not checked, but the pump should be new, because it came with the engine.
When the engine quits and I start it again, it immediatly tries to quit again. There is no difference to before.
The vacuum gauge has to wait a bit, because our weather is really nasty at the Moment and I do not want to kill myself by running the engine in the Garage.