tindgump

i have a 92 firebird with a 305 the prob im having is my engine will stall at anytime but espically when it warms up it also blows black smoke out right before it stalls and right after it starts back up.i have no prob starting it back up but i cant figure out what the prob is.ive been told i can switch to a carberated intake and go that way but i would like to try to fix the prob before i go that route.could anyone give me some ideas on what is causing it to stall and what would be causing the black smoke im just at a loss and need help thanks in advance