When I was a kid (just before Custer died at the Little Big Horn) they called them 3/4 Race and Full Race cams. Like "stages", there were no specifics other than 3/4 was not as racy as a Full cam. Go figure.
Jim Wyche:Senior Citizen. 1992 Mustang GT with a few mods. See webpage http://web.mac.com/jwyche or my garage. 2002 Mustang GT with a few mods. Collegedale, Tennessee.