Confirmed Cam Phaser Death? P0011

SG4247

Looks to me like both the cams are timed to each other correctly. To me that rules out phasers.

But both cams are not timed to the crank properly. It is off a little.

How can this be? Maybe main timing chain has stretch. Or the main chain tensioner is not taking up the chain slack, due to low oil pressure. At 50k miles my main chain and crank gear had significant wear. My car has been driven extremely hard, I could hear the chain noise on start up for a few seconds until oil pressure made the tensioner take up slack. I replaced the chain, gear, tensioner and galley gaskets and now that noise is gone. I never had any codes, just noise.

Has the front cover ever been off? Galley gaskets and seals replaced?

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves