My 2006 LS2 Z51 6 speed was built by Manny. Trickflow 225's, cam, ported FAST 92 intake, Vararam and headers. My first dyno pull was 485 rwhp/436 ftlb. I felt the cam was a too aggressive with bad street manners so I had Manny change out the larger cam for a milder cam. My next pull was 450 rwhp/440 ftlb. Although I lost 35 rwhp...I gained 4 more ftlb of torque and the car pulls harder now from a dig through 5300 rpm. I am much happier with the smaller cam as I seldom drive the car over 5500 rpm.
Manny will be installing my new Vortech V3Si in a couple weeks. So I will post my dyno after the tune ...Manny thinks I will be around 625 rwhp.