Here's what my bike was doing according to my iphone GPS... The bike is a 1950 Excelsior with a full ported engine, stock NT carb (jetted), stock pipe (hollowed out), 40T rear Sportsman sprocket & a NGK B6HS plug (gapped at .025).
I weigh 210lbs & was riding on pretty much all level ground. (There were no big hills to boost the speed).
This will show what is possible without all those fancy parts... (Just a 40T sprocket & a little know how).