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Originally Posted by
lvlemphiz
I believe without a track telling you the details (those things required for analysis) that a street race doesn't definitively tell you anything about every C6z vs a M5...I believe it showed you that on the street at this particular time, between these specific cars that the M5 was faster. You are choosing not to believe it
Again; seen Z's vary in trap widely even stock...don't see why it's hard to fathom a bottom-barrel Z could have taken on a stronger running M5...why is this impossible?
I feel like a lower factory output Z lined up with a strong factory M5. If they were both truly stock, then how else could this be explained? maybe the Z owner is bad about maintenance and his car needs some routine stuff done to get it back to peak output. With what information we have, it should be left at this:
Possibility #1, M5 is hiding some mods
Possibility #2, The Z06 is poorly maintained
Possibility #3, M build this particular engine well, and Chevy didn't do so great with this particular Z "