1972 New Yorker Carb Flooding

Hi all,

Just bought my first Mopar a few days ago: a 72 New Yorker with 31k miles. Love the car and was enjoying driving it around until last night when it died on me after I floored it on the freeway (was having a bit of fun). Diagnosed the issue as severe carb flooding. I can get the car started by flooring the pedal while cranking but it runs ultra rich. When I shut the car down I can hear gas emptying into the intake.

Car has a stock 440 with stock Holley dual chambered 4 bbl carb. Anyone have an idea what might be wrong? Is this common? I've never worked on a Holley but have rebuilt many Quadrajets. Before this issue the car ran perfectly. Want to get it back on the road ASAP so I can continue enjoying the car before the snow flies.
Author: 72NewYorker