What about track prep, shifting at the same rpm (exactly), shifting the same speed, engaging/disengaging the clutch the same, headwind, etc...the dyno doesn't have to deal with those.
Yep, the mph should be "about" the same. You said it yourself
They can be thrown off greatly depending on how bad the mistake is in that 60ft.
Actually most zo6's run 12.3-12.5's with good drivers and trap 117mph or so. Your numbers are bit low. I have always been the one to
emphasize track mph...and
not E.T. I'm very aware of that.
Beloved dyno?
I simply said, if you were to add a horsepower producing mod...what has less variables to deal with so you can see a more accurate gain? The dyno or track?
Beloved? Funny, that is what my name means