Kpmi, beehive valve spring kit .630 lift

With steel top & lower collars. Reduces total valve train mass. Great for stock & moderate performance builds. The one-piece Beehive style springs are manufactured from the highest quality clean chrome silicone wire; shot peened and heat treated for maximum fatigue life. Kit includes steel upper collars; lower collars; valve keys and seals. Works with stock 7mm valve stems. Max valve lift: .660″. Installed height: 1.860″. Seat pressure 178 lbs. Open pressure: 371 lbs. @ .660″ valve lift. Note: See 524994 for replacement valve seals.