idle issues!?!?!?!?!?!?!?!

ok guys I am chasing a problem with my 318 idling funny, My carb is a holley 2210, the motor runs great for the most part but when I drive through town and have to stop at a stop light it idles fine for about 15 seconds then starts sputtering every few seconds then it just dies, it always starts right back up and runs fine, its just a weird issue when idling. sometimes ill catch it right before it dies and as im accelerating it sputters then just takes off like normal. any ideas?