Solid cam damage diagnosis help

Funny...... “a good chance of being correct”.
Uuhhh.....just look at the wear pattern on that used cam.
The wear pattern shows you how the taper is staggered.

Just for grins, I just took a new SBM Comp custom and checked it for taper.
Right at .002....... with the taper staggered just like the used one in the pic.

That’s how they’re supposed to be...... and that’s how they are from the factory.


Yeah, I understand that. To get the taper off like that cam appears to be would require the grinder to be an untrained rookie or a moron.

It happens. It’s hard to find people to do any kind of work like this. So that’s an issue.

I’ve got a custom Cam Motion cam and I forget what lifters that I need to check.