Originally Posted by BugRod
First of all, thats not a two barrel but a four barrel. And yes having the choke open will make cold starting harder. I think you have a leak somewhere in the carb or the float level is set too high
I agree that the float levels may be set too high, or there is some 'junk' keeping the needle and seat open.
Take the float adjustment screws off, and lift up the adjustment nut. Then count the threads showing above the float bowls, with the lower gasket removed. Somewhere close to 3 1/4 threads showing is very close to the correct float level.
Make these adjustments, and road test it, being sure the secondaries open. This will lower the fuel level in the float bowls. Then when you get back, leave it idling, and remove the float level sight plugs. The fuel level should be at the bottom edge of the threads. If a lot of fuel runs out, the needle and seat is most likely bad.
To raise the float level turn the adjustment nut counter clockwise, to lower it turn it clockwise.