LS engines are pretty tough. I haven't heard anything about the engines blowing. I've got a few friends running major boost and huge nitrous shots on stock bottom ends with no problems. If he was revving it too high shouldn't the rev limited have caught it? I bounced off my limited a couple times while doing a burnout a the track the other day.
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Ken
'68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac ( build thread | walk around)
'95 Comp T/A #6 M6 - bone stock ( pics)
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