PAC Racing Springs Mini 8 Degree Valve Lock - 8 mm Valve Stem - Standard Height - Black Oxide - GM LS-Series (Set of 16) Trailing Arm Bushing 1948-1950 Mercury M-47

1948-1950 Mercury M-47

4 in Top Diameter

Carb recommendations: Machined for 4150 style carburetorsSince 1938

2017-2017 Ford F-550 Super Duty

PAC Racing Springs Mini 8 Degree Valve Lock - 8 mm Valve Stem - Standard Height - Black Oxide - GM LS-Series (Set of 16) Trailing Arm Bushing 1948-1950 Mercury M-47Product Description: Valve Lock Mini 8 8 Degree 8 mm Valve Stem Standard Height Steel Black Oxide GM LS Series 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