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Cam installation should always come first when you're assembling any overhead-valve V-8 engine because access is easier before the crank goes in. Ryan Peart of JGM Performance Engineering preps the Comp Cams flat-tappet mechanical camshaft with moly-lube on the lobes and engine assembly lube on the journals. Never use moly-lube on journals. Moly-lube on the lobes acts as a lubricant for start-up and the work of hardening the lobes during break-in.