COMP Cams 0.560" OD Guide Valve Spring Seat Cutter 1.680" OD Valve Seat Steel/Carbide Universal 42041BL crankshaft and idler gears

crankshaft and idler gears

1987-1996 Chevrolet Blazer

Die-cast aluminum cover is fitted with an O-ring seal which eliminates gaskets or sealants

Original Race True Roller

COMP Cams 0.560" OD Guide Valve Spring Seat Cutter 1.680" OD Valve Seat Steel/Carbide Universal 42041BL crankshaft and idler gearsMost 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