Dual valve springs with damper
O.D.: 1.437 inch, I.D.: 1.088 inch, I.D. Inner Spring .815″
Seat pressure: 125 lbs. @ 1.800 inch,
Open Pressure: 350 lbs. @ 1.125 inch
Coil Bind: 1.050 inch, .750 inch lift
Max recommended lift: .700 inch
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.