[Oldmics]

That is the original location for the heat riser tube that goes to the choke.


The existing line you have for the choke which goes over the valve cover and to an orifice on the exhaust manifold is not the original path.


It will work properly in the modified fashion that way but it tells me that you possibly have a non original right side exhaust manifold or one that has been modified.


There would have been a brass 90* elbow connected to the shown intake manifold orifice and then a short tube with a coupling at the carb side run to the carb choke.


Oldmics