Carb Fuel Evaporation?

. The car has 10003 original miles
Is that all!
150,000 plus on the last rebuild (321,000 on my 67 dart). I would have to look to see if starter has been replaced.

Have you verified that your carb is empty BEFORE you attempt to start it?

I live on Northern Colorado. Garage gets between 25 and 85. If I drive the car, 2 to 3 days later, 2 pumps, crank 1 pump, crank, start,

If it sits a week or more like today sat for 10 days, 2 to 3 pumps, crank 1 pump, crank, 1 pump crank, start.

273 2bbl stock.

I have verified that there is fuel before cranking and even after 2 weeks there is still fuel in the bowel enough to give 5 to 6 good squirts.

My typical cranking time is 3 to 4 seconds at a time. I would not crank it for a continuous 30 seconds.