[mdross1]

Not all engines are created equal but I4's to mega inch bb will all run the same in the wrong setup . The cam certainly does effect low rpm reponse,big cams in to high a gear or with rear-end geared too high, cruising through town will cause bucking. Go down one gear get the rpm's up where the engine has no problem all is well.
Bottom line is a well designed thought out drivetrain these problems do not exist.