Hard start

I have a 383 auto in my 67 belvedere. I have a 750 edelbrock ,manuel choke carb and an offenhousen alum intake. This motor is a ***** to start. If it sits for a week I need to pour gas down the carb so it will fire. Even after I have it running and shut it down for a couple of hours it still doesn't start quickly. I tryed a new mini high torque starter,it didn't help. I was told to try a carb spacer.. any ideas?
When ever I had to cold start an older carbed engine I always had to pump the gas pedal a couple or 3 times to get it to light. This would be akin to pouring gas down it's throat.

I don't see how a carb spacer will help. The only thing a spacer is good for is insulating the carb from the heat of the manifold and increasing the plenum volume a little. A new starter won't help unless the problem is that the old starter was spinning the engine too slowly.

The manual choke could be the problem. Try not closing it all the way and see if that helps. If you're not closing all the way now, then try closing it all the way.