Re: Chevy truck 6.0 liter question
It is my understanding that, a few years ago, GM with to short skirt pistons across the board to cut down friction. A friend's Impala sounded like a diesel on startup but never gave any trouble. Kind of hard to sell a noisy engine like that though. Forged pistons in loose bores used to do similar things until they warmed up.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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