Isky Cams - Isky Cams Valve Springs (Blue) - Outer w/ Damper (Hydraulic/Solid Cams) - 1.260&quot; O.D., .886&quot; I.D., 130 lbs. @ 1.750&quot; Seat Pressure, 320 lbs. @ 1.200&quot; Open Pressure, 350 Rate Per Inch, 1.150&quot; Coil Bind, .550&quot; Max Lift