GM-GMC: hesitsation, chevy custom, carter carb

Question
hey, I have a 82 chevy custom deluxe stepside. It has a small block 350 and a 4 barrol carter carb. and for the past 2 to 3 months I've been having the same problem coming back to me. Whenever I take off too fast or go up a hill my engine will hesitate and really slow my truck down. its soundes and feels like either theirs not enough gas getting to the carborator or the plugs are bad and causing a missfire. Latley my truck has been hesitating even accelerating down a slight hill. It first started when the diaphram one the original fuel pump broke. then I replaced it and it ran fine for about a week or two then it started up again and right now I am on my fourth fuel pump whitch I just put in on last wednesday       and its alreadly starting to act up again and I have no clue what to do anymore.thank you for your time I hope to hear from you soon.  

Answer
I run a service where I can check vehicles for recalls and history. If you wish to have this done I can w/ the last 8 numbers of your vin and the cost is $10.00 if you want this done to insure the history and to make sure there are no recalls on this vehicle e mail me at gmautohistory@yahoo.com provide me with the vin and I will send you the link to pay and then you can receive your report online and a hard copy in the mail if you wish.