Ls9 Cam, Pacesetter Longtubes,3" y-Pipe with third cat still present, magnaflow muffler, k/n cai and milled the stock heads .25 thousandths...tuned by Sam Miller. Stock with a tune they make 355-365....414 rwhp 406 tq SAE dyno pulls under 2g rpm.
While I like my CTS, my prior '08 Yukon Denali with the 6.2L is probably the vehicle I miss the most after having traded it in. Just a great overall vehicle and I'm sure you are loving your 6.2 Silverado as evidenced by this thread.
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