I am struggling with a Holley on a medium duty Chevy C65. It has what I believe to be/Googled a governor that is electric. The governor is unhooked and I don't know enough about carbs to know exactly.

My question is if the governor is unhooked is that effecting the carburetor's performance? What model am I dealing with because I bought a Holley Haynes and just breezing through I cant easily ID the carb.