GM LS Dual Valve Spring Kit with Titanium Retainers
147LBS @ 1.800" Seat Pressure, 406LBS @ 1.230" Open Pressure, 1.100" Coil Bind

Spring Specifications
Type: Duel
OD: 1.268"
ID: 0.890"
Seat: 147LBS @ 1.800"
Open: 406LBS @ 1.230"
Spring Rate: 454 lbs/in
Coil Bind: 1.100"
Max Lift: 0.570"

Kit includes Valve Springs, Retainers, Locks and Seals.