Carb jetting/popping bacon sound

I have a 1404 edelbrock which is 500 cfm on a crate 360.The intake is an edelbrock rpm air gap. It seems to be running rich, and is sounds like bacon cooking (the small popping sound) I noticed while I'm trying to adjust it. Its doesn't seem to matter if I adjust the air fuel mix screws in or out. I haven't taken it apart yet to see what jets are in it yet. But I am thinking of doing a rebuild on the carb. But what would cause that popping sound? would a simple re-jet solve that? I also have a q-jet that i have been hanging on to for no reason. Its a 1974 q-jet and wonder if I should rebuild that instead.? But this being my first real mopar I did not want to cross some unspoken NO NOs. :sad5: Being that I was once an old chev. guy:banghead: What do you guys think?