360 magnum cam choice

It sounds like the engine runs pretty good for the known parts you have. If'n it were me, I would leave the engine alone for now. At 110 mph you should be running about 3 tenths faster than you are. Do you have slicks on this? 2800 stall ain't much. I would throw more converter at it. Converter change and a little fine tuning this and that could potentially put you in the 11.90 range. Cam change alone is not likely to get you there, especially since you are not sure what cam is in it now. A cam swap might get you zilch.