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1987-1987 Pontiac Firebird
Low Tension
1996-1999 Ford Crown Victoria
The 17/64" size simplifies installation of 1/4" hardware
tune-up kits
COMP Cams 1.550" Spring Seat Cutter - Cuts Guide: .630" 935116 1987-1987 Pontiac FirebirdMost 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
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