This Dual Valve Spring Kit for LS engines includes carefully matched Dual Valve Springs, tool steel retainers, locks, seals and spring seats. With a .650? maximum lift, these COMP Cams Dual Valve Springs for race applications are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today's engine builders and racers. PartNumber : cca26925TS-KIT Description : LS Engine Dual Valve Spring Kit Title : 26925TS-Kit Kit, Dual Valve Spring, TS, LS Type Coil Bind Height(in) : 0.660 Open Pressure(lbs) : 405 Position : N/A Camshaft Type : Hydraulic Installed Pressure(lbs) : 141 Installed Height(in) : 1.810 Open Height(in) : 1.15 Spring Type : Double Inside Diameter(in) : 0.68 Outside Diameter(in) : 1.320 Spring Rate(lbs/in) : 500 California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov 1998-2002 Chevrolet Camaro Z28 V8.-cc Engine Components::Valve Springs, Retainers 1998-2002 Chevrolet Camaro Z28 SS V8.-cc Engine Components::Valve Springs, Retainers 2003 Chevrolet Corvette 50th Anniversary Edition V8.-cc Engine Components::Valve Springs, Retainers 2003 Chevrolet Corvette 50th Anniversary Edition Pace Car V8.-cc Engine Components::Valve Springs, Retainers 1997-2004 Chevrolet Corvette Base V8.-cc Engine Components::Valve Springs, Retainers 1998 Chevrolet Corvette Indianapolis 500 Pace Car V8.-cc Engine Components::Valve Springs, Retainers 2001-2004 Chevrolet Corvette Z06 V8.-cc Engine Components::Valve Springs, Retainers 1998-2002 Pontiac Firebird Formula V8.-cc Engine Components::Valve Springs, Retainers 1998-2002 Pontiac Firebird Trans Am V8.-cc Engine Components::Valve Springs, Retainers 2004 Pontiac GTO Base V8.-cc Engine Components::Valve Springs, Retainers