Can anyone help?

[Oakley]

I have a 71 blazer with a 350 4bbl edelbrock carb. I'm having a problem with it stalling out. When I start it to let it warm up it starts and runs fine then when I give it gas it will die. It starts right back up and will idle great but take no gas. If I let it warm up abot 10 more minutes and feather the gas it will start running fine and then it's good to go. The blazer has done this twice so far in two weeks but only after i have filled up with gas it does it the next day. Any ideas or suggestions? Bye the way it's an electric choke. It has been cold here around 10 degrees but this past week is the only time I've had a problem. Thanks Josh