COMP Cams 0.560" OD Guide Valve Spring Seat Cutter 1.680" OD Valve Seat Steel/Carbide Universal 42041BL Window Crank

Window Crank

1967-1972 Fargo W100 Pickup

crankshaft and idler gears

1987-1996 Chevrolet Blazer

1985-1986 Chevrolet C10

COMP Cams 0.560" OD Guide Valve Spring Seat Cutter 1.680" OD Valve Seat Steel/Carbide Universal 42041BL Window CrankMost high performance engines today require the use of larger than stock diameter valve springs. This 1. 680" 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. 680" outer diameter while reducing the