Here is a picture, sorta. As close as I could find. The hole in the manifold is for the heat tube on the automatic choke. I would just close it up and carry on. You did say you wanted the manual choke right? Put a plug in with some good anti-seize and drive happy.

http://chevy.oldcarmanualproject.com/shop/1949_53/06engine/6_084.HTM

Last edited by Steve_H; 05/28/2014 6:07 PM.

Steve H