I guarantee that the power will be the same no matter what Chevy publishes between the Z51 and base. Salesmen going to sale you on a promise. Unless it has a more aggressive tune that is. But it doesn't say anything about receiving a more aggressive tune.
Exactly....think most of us remember LS1 fbody cars putting the same dyno numbers down as C5 vettes that had 40-50 more hp on paper.
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