The Comp Cams austempered ductile iron hydraulic roller camshafts are not parkerized. The ductile iron hydraulic roller camshaft are only coated with a corrosion inhibitor which should be washed off with a solvent before the camshaft is installed. The hydraulic roller camshaft lobes and engine bearings should only be lubed with motor oil containing GM 88862587 EOS or Permatex 81950. Electromagnetic parkerization is not required on ductile iron hydraulic roller camshafts and it cannot be used on high nickle-steel billet solid roller camshafts.
Flat tappet camshafts:
Parkerization is a zinc-phosphate electromagnetic conversion treatment that is only used on flat tappet camshafts in order to prevent corrosion during storage. Parkerization also effective at absorbing moly-disulfide lubricant until the engine can be started and the camshaft broke-in.