COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" 38500310 Late model GM

Late model GM

Jeep Wrangler JK 2011-17

1972-1972 Chevrolet C30 Pickup

Designed specifically for short track use

Engine Side

COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" 38500310 Late model GMMost high performance engines today require the use of larger than stock diameter valve springs. This 1. 550" 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. 550" outer diameter while reducing the