Description:
Spring, Valve, 37 lb at .812”, 65lbs open. Large diameter spring, Alum Retainers recommended, Coil bind at .330, 8000 RPM, Use with .280 and .285 Cams using 1.1 rockers, Reinforced or Billet Rocker arms and CM Pushrods Required, Sold individually Special Order
37lb springs sold in sets