My 56 with the stock intake would boil the fuel when I changed to a Carter WCFB small base carb. The fuel is not stored up top like a early Holley. I added a 3/8" mycarda plate and it was still to hot. I used the crossover internal choke tube for the choke release so I wanted to keep the manifold heat and I know its good for fuel atomization. Next I wired open the exhaust flapper on the passenger side, it was very free and the gasoline boiling went away. When I changed intakes I replaced the gaskets with the metal restriction. To me it is NOT a small hole. It is about 1/2" in diameter and the heat choke works perfectly. Good Luck

56 Vic, B'Ville 200 MPH Club Member, So Cal.

I assume Paul's 'bone stock' '56 292 with the blocked-off 'B' manifold must be running a carb with elect., manual, or exhaust-heat choke setup (?), since likely only exclusive summertime drivers could get away with no choke heat (even in Missouri).

6 VOLTS/POS. GRD. NW INDIANA

Daniel,believe it or not,I don't have any choke on my car.I guess I lied a little about"bone stock".I do have a 4100 Autolite carburetor and Pertronix ignition.A couple of pumps of the foot feed and it fires right up,even in cold weather.Below freezing,I have to wait a minute before taking off.

 

Paul,

Boonville,MO

Very interesting. I was planning to purchase an electric choke kit for whatever carb I ended up with (4150?). I should likely wait to see if I will really need it. At worst, I could wire a switch into the choke circuit so the drain on my 6v system (generator/OD) is minimized in summer, especially when running with the brights at night.

6 VOLTS/POS. GRD. NW INDIANA

I don't use the choke either and it gets into the single digits here.  I think a good tune and strong battery are key for that.  If anything is off, you will probably have difficulty starting.
My ignition contributed greatly to that.  It is an aftermarket, inductive discharge system.  It made it much less cold natured vs the previous points system, which I thought was better than my previous Pertronix system.



Lawrenceville, GA