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Say what you want, I had a Cobalt SS with a 2 liter LNF bolted & tuned pushing 360 whp and 405 wtq. (Dynojet) The 60-100 mph time was 4.4 sec. (3000 lb car) so I expect it will not be too shabby at 270 hp stock in a 3700 lb car. The newer version Buick has is an LHU, same basic DI turbo 4 banger. Twin scroll turbos have almost no lag. It's a rush to spin the tires at 60 in 3rd gear. lol.
My LS3 runs 5.8 sec 60-100 mph by comparison logged with HP Tuners. Both cars running 3rd gear pulls.
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Another 1 of 371 '12 T3 LS3 M6's built.

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