All,
As my signature indicates I have a 2001 Burb with the 496/8.1. They are drive by wire....computer controlled. Yes I have the piston slap noise AND I go through 1qt of oil every 1000 miles or so.
GM says this is acceptable (not sure to who though).
First off, do some research on the web and make sure you can live with the possibility of owning a truck with these two traits. Second, GM says it won't hurt anything.....maybe not, but I don't like it.
Does it perform? You bet. My Burb moves for a 7000lb rig.....plus a supercharger is available too.
PM me if you have any questions.
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