the black finish on my nitrided cam mostly wore off where the lifters ride. i had my valley cover off after a few hundred miles to just take a look at things. the lifters i pulled looked to be spinning ok. i also had a few small scrape marks on the cam where the black finish came off when i assembled the engine. i didn't handle it much so i didn't have any issues rubbing it off. seems to be ok though.
Last edited by 68 HEMI GTS; 12/23/1601:33 PM.
68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780# 69 Roadrunner 511 six pack 10.92 drive to track street car