Adam (04 gto in Rochester) ran a 10.9 @ 136 mph last Sunday with a forged internal 6.0 litre shortblock and a z06 cam , stock untouched 241 casting heads and stock ls6 intake and throtle body with stock exhaust manifolds , gutted cats at 14psi on a t76 with front mount on pump gas with a stock 6 speed tranny , and tuned by me .
looks like its got a lot more in it too (judging by trap speeds).
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I wonder how much is traction-limited, as the GTO rear wheelwells are tight. I don’t know if Adam’s running with anything wider than the stock 245’s at the track.