1985 Ford Ranger carburator backfirring

I recently got stuck in the snow as a result of trying to get out I reved my engine alot. I now have my carburator "back firring"?...When I give it gas there is a loud popping noise from the carb and upon further inspection it seems to be backfirring threw the carburator. I have a big loss of power to the engine and am unable to drive the truck ...can you give me a clue as to what I should do to rectafy the problem.....
thank you mike