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Old 10-08-2021, 06:35 AM   #2
nighttowl
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Drives: 2018 ZL1 1LE
Join Date: Dec 2011
Location: TX
Posts: 1,913
if it were a ring most likely the cylinder wall would have been destroyed or glazed over.
It is possible a lifter could have been holding the valve open.
On the dyno - I would see what others have dynoed on the same dyno / dyno operator.

Did the car feel slow to you on the day you dynoed it?
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2018 MBM ZL1 1LE - 652 rwhp, 588 rwtq SAE
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