Engine Valves & Valve Springs (4.3L)
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.
VALVES & VALVE SPRINGS (4.3L)
| Application | Specification | ||
|---|---|---|---|
| Valves | |||
| Face Angle | 45° | ||
| Minimum Margin | .031" (.79 mm) | ||
| Valve Springs | |||
| Free Length | 2.02" (51.56 mm) | ||
| Installed Height | |||
| Intake | 1.78 (45.2 mm) | ||
| Exhaust | 1.7 (43.2 mm) | ||
| Lbs. @ In. (Nm @ mm) | |||
| Pressure | |||
| Valve Closed | 76-84 @ 1.78 (338-374 @ 43 mm) | ||
| Valve Open | 187-203 @ 1.27 (832-903 @ 32 mm) | ||