If you want it to run right you'll either have to learn how to check and modify it or pay someone to do it for you because timing is one of the most crucial factors in a car running correctly. You can't just slap a big cam in it and expect it to run right. The timing curve will most likely need adjusted/modified and you might also have to change the step up springs in the carb to lighter ones, depends on how much vacuum the engine pulls. But you gotta get the timing right first.
Telling us you put a Summit cam in it was a waste of time. WHAT Summit cam did you put in it??? If you tell us WHAT cam it is it'll give us a much better understanding of what you need to do.
BTW: it's possible you may have to install a higher stall converter, but first you need to get it running right. If it's not a real big cam the stock converter may work ok.