^^^ this
Does it have an aluminum block? The AL block and steel pistons have differing expansion rates, which likely is one reason why this noise has shown up on more recent (as in post-80's) engines, along with the shorter pistons. Plus, AL conducts sound better than iron. Also the dealer won't do anything. 10-15 years ago they were replacing some Corvette LS engine pistons with teflon-coated ones to reduce the cold slap, but I heard the coating would just wear off.
Does it have an aluminum block? The AL block and steel pistons have differing expansion rates, which likely is one reason why this noise has shown up on more recent (as in post-80's) engines, along with the shorter pistons. Plus, AL conducts sound better than iron. Also the dealer won't do anything. 10-15 years ago they were replacing some Corvette LS engine pistons with teflon-coated ones to reduce the cold slap, but I heard the coating would just wear off.
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