PAC Racing Springs 10 Degree Valve Lock - 11/32 in Valve Stem - Standard Height (Set of 16) 58-0021-1 An optional red plastic plug

An optional red plastic plug is available for the center hole

Street Rod

or 8 cylinder engines

11-15 Degree

PAC Racing Springs 10 Degree Valve Lock - 11/32 in Valve Stem - Standard Height (Set of 16) 58-0021-1 An optional red plastic plugProduct Description: Valve Lock 10 Degree 11 32 in Valve Stem Standard Height Steel Natural Set of 16 Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing weight from traditional methods.