COMP Cams 1.580" Spring Seat Cutter - Cuts Guide: .630" 200430107 Adaptor Tee

Adaptor Tee

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COMP Cams 1.580" Spring Seat Cutter - Cuts Guide: .630" 200430107 Adaptor TeeMost high performance engines today require the use of larger than stock diameter valve springs. This 1. 580" Spring Seat Cutter from COMP Cams will allow the engine builder to machine the cylinder head to the proper size for your spring. Each cutter requires the use of an arbor pilot, which are available in three different sizes. This valve seat cutter allows you to enlarge the cylinder head spring pocket to 1. 580" outer diameter while reducing the