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Wow. I'm amazed that someone would take the time to argue it.
GM refers to the displacement newer LS architecture engines in metric terms (5.7L) so the 'old' and 'new' smallblocks are rounded to be the same. It's good for GM because everyone can identify with it. The actual displacement of the LS1 and LS6 are 346 cu in, but even the 'old' 350s weren't always exactly 350 cu in.
So when you rebuild the motor and clean up the bores, should you refer to your engine as a 355? Or in the case of the LS6, a 351?
The guy should get a life.
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