Dual valve springs with damper
O.D.: 1.440 inch, I.D.: 1.088 inch, I.D. Inner Spring .815″
Seat pressure: 140 lbs. @ 1.800 inch,
Open Pressure: 330 lbs. @ 1.200 inch
Coil Bind: 1.125 inch, .675 inch lift
Max recommended lift: .675 inch Max Lift
Good for Hydraulic Flat tappet, Solid Flat Tappet and some Hydraulic Roller cams. Used internally on all -2 Small Block Head Assemblies
Have been using these springs for 20 plus years. Excellent success rate with these. Have used these springs on All World Products and Bill Mitchell Products BMP cylinder heads for 20 plus years. As the old saying goes “if isn’t broken then don’t fix it”. Of course we recommend that you check your valve spring rates periodically to make sure they are in good health.