[DMXF]

Keep in mind choke size effect probably has limited benefit analogous to other parameters, like cam specs. For example, if you have a bone stock 390 and try putting bigger cams in, the performance increase will likely be marginal. In contrast, if you do the same thing with a Keith Craft built 500+ ci 650hp FE monster, the power difference between a stock 390 cam and a high lift & duration roller will be tremendous. It's more an issue of allowing the engine to make the power and rpm it was designed for rather than it forcing the engine to turn more rpm than it should.