COMP Cams 1.680 Spring Seat Cutter

This valve seat cutter allows you to enlarge the cylinder head spring pocket to 1.680" outer diameter while reducing the outer diameter of the valve guide to .630".

Cuts cylinder head spring seats to 1.680" outer diameter / .630" inner diameter. Requires the use of an arbor/pilot, which are available for 5/16", 11/32" and 3/8" valve stem sizes.