Quote:
Originally Posted by 88Racing
6.0L manufactured before 2003 developed piston slap at relatively low miles.
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All of the LS series engines did. However, I think that the 3.1L V6 was GM's first introduction of mass-produced piston slap when they redesigned the short-skirt pistons in '96 or so.
I have had the unfortunate pleasure of telling hundreds of worried or irritated customers that "the sound is normal". They didn't care much for that. 
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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