COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" BR10122 Billet Specialties Tru Trac /

Billet Specialties Tru Trac / V-Trac

Mopar V6 / Small Block Mopar / Mopar Early Hemi

NASCAR Large Bore

Drag chutes only understand two things: weight and speed

COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" BR10122 Billet Specialties Tru Trac /Most 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