Odd shaped lobes, metal in the oil, and ticking sound when ending is running. The lobe will basically look rounded on the edges and different than the others.
Causes I know of:
1. Excessive fuel on break in diluting oil.
2. Cam change and retainer to guide clearance not checked and hitting.
3. Pre-loaded lifters over loaded.
4. Improper break-in.
5. Mismatched lifter to lobe if cam and liftere's are removed and not put back on the same lobe.
