Slight Knock/Tick in 2001 LS1
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Location: Florissant, MO
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Slight Knock/Tick in 2001 LS1
I have started noticing a slight knock from my motor. I have donne the screwdriver to the ear test on the valve covers and have determined it is not the valve train. It is almost too quiet to be a rod and almost goes away completely once the engine is at operating temperature. I have heard something about GM over boring the #7 cylinder and that causing piston slap. Can anyone help me out here? What could this be?