Q: Engine noise, top left side of vehicle if observer is facing the car. Camshaft? on 2002 Chevrolet Corvette Z06

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Metallic noise coming from the top area of engine, left side if facing the car. No check engine light. Thinking broken camshaft?
(1) Answer
More than likely a broken rocker arm, but it can also be a broken valve spring.

Both problems can lead to an engine failure, the biggest worry would be the valve spring.

Don't rev the engine it can fail in a second.

I suggest having it trucked to the repair shop and tell them to pull the valve, on the side with the noise cover for a look.