Valve Springs, Isky, set 16, SB Ford, dual with damper, 195 lbs (S) 540 lbs (O)

Selecting the correct valve springs for your application is critical to both performance and reliability.  Preventing spring bind and valve “float” requires careful matching of all components.  Beehive springs reduce spring and retainer weight, Nitride treatment increases surface strength, and heat treating helps resist load loss.  Spring pressures listed are rated at both “seat” height (S) and “open” height (O).