Specification:
Number of Springs Per Valve: Single
Outside Diameter of Outer Spring (in): 1.290 in.
Spring Coil Bind Height (in): 1.140 in.
Damper Spring Included: No
Spring Install Load: 130lbs
Spring Install Height: 1.800"
Spring Open Height: 1.175"
Spring Open Load: 318 lbs
Spring Rate (lbs/in): 313 lbs./in.
Inside Diameter of Outer Spring (in): 0.885 in.
Valve Spring Style: Beehive

Lifters Fitments Includes:
Replacement for 1999-2012 Trucks/SUVs 4.8L
Replacement for 1999-2007 Trucks/SUVs 5.3L
Replacement for 1997-2004 5.7L LS1 V-8
Replacement for 2005-2009 6.0L LS2 V-8
Replacement for 1999-2010 Trucks/SUVs 6.0L
Replacement for 2005-2009 6.0L LS2 V-8
Replacement for 2008-2013 6.2L LS3 V-8; without AFM
Replacement for 2006-2013 7.0L LS7 V-8
Replacement for Factory Roller 93-97 LT1
Replacement for 305-350 Chevy Engines

Package Includes:
1 x camshaft
16 x roller lifter
16 x valve spring