PAC Racing Springs 7 Degree Valve Lock - 5/16 in Valve Stem - Standard Height - Black Oxide (Set of 16) FRD302-350 12 mm and 16 mm

12 mm and 16 mm threads

1964-1971 Oldsmobile 442 CID 283

Fits 1993-2012 Buick with 4

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Hurst Blueprinted Super Speedway shifters feature selector levers that are blanchard ground to assure smooth operation

PAC Racing Springs 7 Degree Valve Lock - 5/16 in Valve Stem - Standard Height - Black Oxide (Set of 16) FRD302-350 12 mm and 16 mmProduct Description: Valve Lock 7 Degree 5 16 in Valve Stem Standard Height Steel Black Oxide 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