MP .509 Purple shaft cam...maybe?

Well, its got purple paint on it but I've measured it 4 times and I come up with a .513 lift:(1.573 lobe - 1.231 base circle =.342 lift, X 1.5= .513 lift?) and nothing in the MP has that 'cept maybe the .509 with the valve lash? The lobes look ok, they all measure a hair of each other and its got a 6 digit number on the end. Got in trade...Used, Journals are smooth.
$30 plus shipping from 92780 Socialist Cal.
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