Valve Seal Cutter Suit .530" seal (Pilot Sold Seperatley)

These tools from Crower will allow machining of the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor/pilot, which is available in three different sizes. These arbor/pilots also will work with the valve guide cutters used for shortening the guide for a high lift cam or installing a COMP Cams Teflon seal for oil control.