COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" 935116 X-Series Wideband Gauges and the

X-Series Wideband Gauges and the X-Series Inline Controller support the popular 4

1973-1977 Buick Century

1987-1987 Pontiac Firebird

GM Fullsize SUV / Truck 2007-14

1996-1999 Ford Crown Victoria

COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" 935116 X-Series Wideband Gauges and theMost 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