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The COMP Cams 1.550 spring seat cutter enlarges cylinder head spring pockets to a 1.550" outer diameter and machines the valve guide to a .630" outer diameter. It requires the use of an arbor or pilot sized to the valve stem being used and is intended to prepare heads for larger springs or hardened seats where a 1.550" pocket is needed for proper installation.
COMP Cams 1.550 Spring Seat Cutter For .
