dad's 72 is poping and farting

[67cst]

need help here guys, we think its a carb problem but just thought id ask the experts for help, my dad just bought a beater 72 chevy 3/4 4x4, 350/th350..he bought it without hearing it run because it didnt have a carb on it, we plan on tearing it apart anyways but thought it would be nice to take it for a spin and make sure that everything works first. so whats happening is we put an old quadrajet on it just to fire it up and it is timed, and fires up nice and idles great but when you go for a blast it backfires out the carb, if you acelerate slow it isnt as bad but if you punch it a bit it runs like $hit....any suggestions? we figure its the cruddy old carb but maybe someone else has an idea


thanks, Derek