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17. What you may not expect however was the power increase, with the LS9 camshaft picking up tremendous power and torque everywhere. Peak power was up by 47, and torque jumped 20.5 lb-ft. As one would expect, the gains up top were really impressive, with power climbing all the way to 6500, where the factory camshaft tailed off around 5800rpm. The final results were 395.29-rwhp and 372.95 lb-ft of torque.