Eric's cam challenge

050 duration numbers were in catalogs well before the 80s.
That's not what I stated, I stated the "average guy" wasn't talking picking cams based on the @.050" numbers, they were picking them based on the general advertised durations. Magazine articles started bumping up the awareness that for example, not all 292° cams are the same, the average Joe started actually looking at/for them.....the DC/MP catalogs or racing manuals NEVER published @.050" specs, putting the .850 conversion in there was the response to what I stated, which is 100% fact.