1949 chevy styleline. 216 3 speed column shift. now here's the problem on first start up the car starts up quick, idles fine and runs great, i drive it for a bit,(10 minutes or so) and it'll start to bog and then dies soon after. after that initial dying, it'll take a long time to start and when it finally fires it''ll drive about 10-15 feet and die again, and i have to repeat the same process. any ideas?