PAC Racing Springs 10 Degree Valve Lock - 11/32 in Valve Stem - 0.050 in More Height - Black Oxide (Set of 16) 1239272 After installing your helmet hardware

After installing your helmet hardware and test fitting your NecksGen in your car

Edelbrock 1-Ford # 60259

Gauge must be mounted outside vehicle

Chevrolet: Bel Air 62 - 69 5

It is designed for use on SBF applications using a standard ATI or Fluidamper "style"

PAC Racing Springs 10 Degree Valve Lock - 11/32 in Valve Stem - 0.050 in More Height - Black Oxide (Set of 16) 1239272 After installing your helmet hardwareProduct Description: Valve Lock 10 Degree 11 32 in Valve Stem 0. 050 in More 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