Measure it, and you'll never go wrong.
Until recently, Mopar's Michigan-based cam grinder was not required to mark cams with numbers identifiable to anyone but themselves.
Mopar's requirements were, until recently, a series of cryptic paint codes on the cam which over time have been proven to be inaccurate....with many cams, the paint code is "none", and with no reliable identifying marks....you gotta measure.
The 6 digit stamping is a job number internal to the cam grinder, which does not directly correspond to any of Mopar's numbers. To decode one to find out what grind it is generally requires a long complicated 3 way conversation and by the time it's done, you could have measured it....
The end to all this is near.
When Mopar's existing stock is sold, the next batch of cams will be marked with a "P" part number that is almost identifiable by the general public. I say "almost" because the cam component number is never the same as the cam/lifter kit number. They are usually off by one digit or sometimes very different.
