This is the product description text that will appear here.
Quantity
1
Spring, Valve, Dual, 55 lb at .812”, (30 lbs at .950 & 83 lbs at .570”), Large diameter spring, Alum Retainers required, Coil bind at .370 lift (.440” spring), 8000 RPM, Use with .307 cams using 1.2 rockers, Reinforced or Billet Rocker ...