Comp Cams GM GEN IV LS2/LS3 Hydraulic Roller CamshaftFSL Cams for the GM Gen III IV three bolt and GEN IV single bolt applications can produce a 30 to 47 HP increase in peak power, without requiring a valve spring upgrade or tuning. The best part of these new FSL cams is the incredible power gains that come without the risk of non compliance with emissions regulations. This Part Fits: Year Make Model Submodel 2008 2009 Buick LaCrosse Super 2009 Cadillac Escalade Hybrid 2013 Chevrolet Avalanche Black