nitriding is a fancy form of heat treating, where we remove air, and use only nitrogen. I run custom nitrided 11/32" valve guides-good since 1995. hard chroming is old school-good for old engines where only a cast crank is available
Chrysler said their nitriding was a chemical process to harden, and was very thin. Steel cranks that spun bearings, or had thrust surface troubles were chromed too. Had one in one of my hemi`s , bought it from Jim Hale.-------back in the day.
