Thread: Valve noise on startup
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Old 10-12-2009, 04:20 PM   #3
kelley@vectormotorsports
 
Drives: 2009 Pontiac G8 GT
Join Date: Jun 2009
Location: Clinton Twp., MI
Posts: 241
Most likely you are hearing piston slap. It is very common in cold LSX engines. Nothing to worry about though.
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