12 Because this is a box stock 427 with minor upgrades--like forged pistons--it gets a factory grind, flat-tappet mechanical cam and solid lifters. Professional and amateur builders mess this up all the time. Engine assembly lube on journals and moly coat on lobes. Never use moly coat on journals. And by the same token, never use lube on lobes. This is crucial to proper cam lobe hardening during initial fire-up.