poor acceleration

[gonzo6869]

I am a new member, so sorry if this has been answered already. I just got a 72 C-10 short steper. It has a 350 with comp hooker headers and a Eldebrock 1406 carb, it also has Weber stamped on the right side. Other then that it is stock. The problem I am having, when I step on it, it hesitates and I can hear a pop coming from the front, not really a back fire. Is there a simple adjustment I can make to the carb to fix this. I have changed the inline filter right before the carb, is there an other carb closer to the tank that I can change as well.
Thanks for the help.
Josh.