In our visit to the School of Automotive Machinists I also happened to find them porting a set of LS3 heads, quite possibly for the Victory Red 2010 Camaro SS they just picked up. Only time will tell...what I can say, though, is that it baseline dyno'd a stout 377.66hp and 378.56 lb-ft of torque at the wheels on SAM's in-house Dynojet. A recent test of a bone stock LS1 F-body showed this to be a 63hp and 44.5 lb-ft improvement over the fourth-gen.