Valve Spring Specs:
1.437” OD Hydraulic Roller Dual Drag Race Spring
.550” max lift
Installed Load: 125 lbs. @1.800
Open Load: 304 lbs. @1.250
Coil Bind: 1.090
Spring Rate: 320 lbs.
Max RPM 6100-6300
Steel Retainer: 8510
SBC/SBF Valve Lock: 9009
*For those who need shims any general shim kit will work