1930s carburetor question

[Randy in Illinois]

Mr tube, impressive car, love them too,but i couldn't. Afford one. I dont think aoutmatic trans wasn't. Availiable until 1939-1940 . The noise might be a relief valve to let the pressure from the supercharger. Out of the manifold , to prevent intake manifold explosion. Much like todays high performance tubro/ or supercharged cars. Thanks for shareing, what a great car, said to do over 60 mph in sevond gear.