COMP Cams Stage 1 LST 186 200 Solid Roller Camshaft 2000+ GM 6600 6.6L Duramax Diesel 4ID SEED DESTINY CD Yahoo! SEED DESTINY Complete Blu ray SEED DESTINY HD 4 A5 SEED DESTINY : LEAD. The LST Camshaft Series uses the newest and most advanced lobe designs from COMP Cams. These new lobes provide the potential for major increases in power and torque in Duramax engines when combined with the appropriate tuning. The Low Shock Technology features lobe profiles designed to maximize additional engine airflow, which reduces harmful EGTs, while improving stability at higher RPM. These profiles are also easier on the valve springs, enhancing durability and reducing load loss. Organized into stages that allow you to choose your level of performance, Stage 1 Camshafts are No Springs Required and run well with the factory or a performance tune. Stage 2 and 3 camshafts require a COMP Cams #26125 Beehive Valve Spring Kit upgrade but do produce the greatest potential for additional power and RPM when matched with maximum effort tuning. User 1 This Part Fits: Year Make Model Submodel 2006 2016 Chevrolet Express 2500 Base 2006 Chevrolet Express 2500 LS 2006 Chevrolet Express 2500 LT 2006 2016 Chevrolet Express 3500 Base 2011 2016 Chevrolet Express 3500 LS 2011 2016 Chevrolet Express 3500 LT 2001 2005 Chevrolet Silverado 2500 HD Base 2015 2016 Chevrolet Silverado 2500 HD High Country 2001 2006 Chevrolet Silverado 2500 HD LS 2001 2016 Chevrolet Silverado 2500 HD LT 2007 2016 Chevrolet Silverado 2500 HD LTZ 2004 2016 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2001 2005 Chevrolet Silverado 3500 Base 2001 2006 Chevrolet Silverado 3500 LS 2001 2006 Chevrolet Silverado 3500 LT 2004,2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2015 2016 Chevrolet Silverado 3500 HD High Country 2007 2016 Chevrolet Silverado 3500 HD LT 2007 2016 Chevrolet Silverado 3500 HD LTZ 2007 2016 Chevrolet Silverado 3500 HD WT 2006 2016 GMC Savana 2500 Base 2006 2016 GMC Savana 3500 Base 2011 2016 GMC Savana 3500 LS 2011 2016 GMC Savana 3500 LT 2002 2005,2015 2016 GMC Sierra 2500 HD Base 2011 2016 GMC Sierra 2500 HD Denali 2001 2002,2006 GMC Sierra 2500 HD SL 2001 2016 GMC Sierra 2500 HD SLE 2001 2016 GMC Sierra 2500 HD SLT 2003 2014 GMC Sierra 2500 HD WT 2007 GMC Sierra 2500 HD Classic SL 2007 GMC Sierra 2500 HD Classic SLE 2007 GMC Sierra 2500 HD Classic SLT 2007 GMC Sierra 2500 HD Classic WT 2002 2005 GMC Sierra 3500 Base 2001 2002,2006 GMC Sierra 3500 SL 2001 2006 GMC Sierra 3500 SLE 2001 2006 GMC Sierra 3500 SLT 2004 2006 GMC Sierra 3500 WT 2007 GMC Sierra 3500 Classic SL 2007 GMC Sierra 3500 Classic SLE 2007 GMC Sierra 3500 Classic SLT 2007 GMC Sierra 3500 Classic WT 2015 2016 GMC Sierra 3500 HD Base 2011 2016 GMC Sierra 3500 HD Denali 2007 2016 GMC Sierra 3500 HD SLE 2007 2016 GMC Sierra 3500 HD SLT 2007 2014 GMC Sierra 3500 HD WT 2006 Hummer H1 Alpha