Question on new HotCams

I just received my HotCams and noticed the lobs on the cams are not machine polished like the part that meets the cam journals. The lobs look like they are black oxide.

Is this normal? I've never seen new cams before, only worn ones.



That's what they look like ,mine were the same. No sense machining the entire surface.


The lobes on your camshaft are likely "Parkerized", a phosphate based conversion coating that helps hold lubrication on the cam surface during break in.

Thank you very much for the info.


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