Uncle Tony's garage did a recent video of lifter and cam failure of DD's Speed Shop's 454 Chevy. The lifter had a stripe like yours from not spinning on the cam lobe. Reason was the cam was ground with no taper on the lobe, which is needed to spin the rotor. Took out the cam and lifter, and did some damage. Defective parts, again. This kind of failure, common now, was unheard of in the 1990's and prior.
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Jeff 
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