COMP Cams - 4720CPG
Valve Spring Seat Cutter - 0.630 in OD Guide - 1.580 in OD Valve Seat - Steel / Carbide - Universal - Each
This valve seat cutter allows you to enlarge the cylinder head spring pocket to 1.580" outer diameter while reducing the outer diameter of the valve guide to .630".
Most 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.
Cuts Guide Outer Diameter to: 0.63
Cuts Spring Seat Outer Diameter to: 1.58
Amazon ASIN: B000A8FNKO
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?: Yes
C.A.R.B. Exemption Reason: No impact on pollution output of vehicle.
C.A.R.B. E.O. Number: N/A
