[oletrucks] Rochester carb info

["Antonio R. Tijerino" <antonio@tijerino.net>]

I have a 235 '55 car engine in my '53 Chevy truck. I am pretty much ready to
start the engine after while. When I got the engine, it came with a
Rochester carb that has built-in auto choke, now the question that I have
is: I noticed that right below the area where the choke mechanism (mix
adjustment dial) is located  (6 o'clock) there is like treaded pipe nipple
sticking out. This is not for vacuum, does anyone know what this is for?

Thanks,

Antonio
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