Fuel consumption Trans Am 84

Hello everyone. The fuel consumption of my Pontiac Trans On the 84 V8 is beyond good and evil (22l) in the city near Grandma driving mode. I have a Holley carburetor with mechanical choke (I believe)! Choke flap I can only move by small hand slider. Position always quite openly even when engine is cold. Never moves! To start the car in cold condition I go to the accelerator once when engine and ignition are off. (often also several attempts and gas bursts). Then it starts and starts. still remains open and that never changes. Can the choke still keep running? if so how can I find out that Choke lamp never lights up. How can I disable it? Choke flap position completely open in warm engine condition correct? Engine: Chevy 6.2l 383 Stroker. gruss