Crown Victoria V8-281 4.6L SFI (1998)
Valve: Specifications
GENERAL SPECIFICATIONS
Valve Arrangement (Front-to-Rear)
Left Hand ............................................................................................................................................................................................. E-I-E-I-E-I-E-I
Right Hand .............................................................................................................................................................................................. E-I-E-I-E-I-E
Valve Stem to Guide Clearance
Intake ................................................................................................................................................... 0.020-0.069 mm (0.000787-0.002717 inches)
Exhaust ................................................................................................................................................ 0.045-0.095 mm (0.001772-0.003740 inches)
Valve Head Diameter
Intake ...................................................................................................................................................................................... 44.5 mm (1.752 inches)
Exhaust ................................................................................................................................................................................... 34.0 mm (1.339 inches)
Gauge Diameters ....................................................................................................................................... 42.5 and 32.0 mm (1.6732 and 1.2598 inches)
Valve Face Runout Limit ........................................................................................................................................................ 0.05 mm (0.001969 inches)
Valve Face Angle ...................................................................................................................................................................................................... 45.5°
Valve Stem Diameter (Std)
Intake ........................................................................................................................................................... 6.995-6.975 mm (0.2754-0.2746 inches)
Exhaust ........................................................................................................................................................ 6.970-6.949 mm (0.2744-0.2735 inches)
(0.015 Oversize)
Intake ....................................................................................................................................................... 7.376-7.356 mm (0.29039-0.89606 inches)
Exhaust .................................................................................................................................................... 7.351-7.330 mm (0.28941-0.28858 inches)
(0.030 Oversize)
Intake ......................................................................................................................................................... 7.757-7.737 mm (0.3054-0.30461 inches)
Exhaust .................................................................................................................................................... 7.732-7.711 mm (0.30441-0.30358 inches)