F 150 Heritage 4WD Pickup V8-5.4L CNG VIN M (2004)
Valve: Specifications
Valve stem diameter
intake ................................................................................................................................................................. 6.995 - 6.975 mm (0.2754 - 0.2746 inch)
Valve stem diameter
exhaust .............................................................................................................................................................. 6.970 - 6.949 mm (0.2744 - 0.2736 inch)
Valve stem-to-guide clearance
intake ................................................................................................................................................................. 0.069 - 0.020 mm (0.0027 - 0.0008 inch)
Valve stem-to-guide clearance
exhaust .............................................................................................................................................................. 0.095 - 0.045 mm (0.0037 - 0.0018 inch)
Valve head diameter
intake ................................................................................................................................................................. 44.63 - 44.37 mm (1.7571 - 1.7469 inch)
Valve head diameter
exhaust ......................................................................................................................................................................................... 36.01 mm (1.4177 inch)
