360 stalls on deceleration from throttle blip

Hey everyone, so I have a 1973 Duster I’m trying to work on with my son for his first car. I posted another question about the temp sensor but now have another question. This car needs a ton of work. It has a 360la motor that was installed before I got it from another unknown vehicle. I had to go through all the wiring as it was really rough. I also had to install a new distributor because the HEI one they had installed with the coil built into the cap was too big and hit the fire wall so couldn’t advance timing. I installed a new one with smaller cap and coil separate. I have the timing set to 12 advance. The engine seems to idle well at about 850rpm. It has an edlebrock 4 barrel carb I think a 1408. I have the screws backed out about 2 and 3/4 turns. It’s a 904 auto. What it’s doing is when it’s in drive at slow speed if I hit the throttle fast and let off fast the car dies when I let off fast. It seems like rpm drops way low and stalls. It drives fine otherwise but again if I blip the throttle on the deceleration side it stalls. Any idea where I should start to take care of this?