Originally Posted by
canyouheminow
a bone stock straight off the showroom floor GTO runs in between a 13.5-13.9 pending how good of a driver you are and how well it launches. One with simple bolt-on's i.e. Cai & exhaust you can expect to run between 13.3-13.8 again pending driver and launches
The newer ones run better than that.. thats for the old LS1 powered ones I believe.
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