Cylinder Head (7.4L)
WARNING: This page does not describe the selected car, but rather 55 other vehicles, including the 1999 Oldsmobile Bravada, 1999 GMC Yukon, 1999 GMC Suburban, 1999 GMC Sonoma, and 1999 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD (7.4L)
| Application | Specification | ||
|---|---|---|---|
| Valve Seats | |||
| Intake Valve | |||
| Seat Angle | 46° | ||
| Seat Width | .035-.06" (.762-1.524 mm) | ||
| Maximum Seat Runout | .002" (.05 mm) | ||
| Exhaust Valve | |||
| Seat Angle | 46° | ||
| Seat Width | .06-.095" (1.524-2.413 mm) | ||
| Maximum Seat Runout | .002" (.05 mm) | ||
| Valve Guide Oil Clearance | |||
| Intake Valve | .001-.003" (.025-.074 mm) | ||
| Exhaust Valve | .0012-.0031" (.030-.077 mm) | ||
| Warpage | .004" (.1 mm) | ||