Engine Valves & Valve Springs Specifications
VALVES & VALVE SPRINGS
| Application | Specification | |
|---|---|---|
| Intake Valves | ||
| Face Angle | 44 1/2-45° | |
| Head Diameter | 1.3256-1.3358" (33.670-33.929 mm) | |
| Installed Height | 1.8367-1.8735" (46.652-47.587 mm) | |
| Minimum Margin | .0028-.0209" (.071-.531 mm) | |
| Length | 4.2476-4.2673" (107.889-108.389 mm) | |
| Stem Diameter | .2337-.2344" (5.936-5.954 mm) | |
| Exhaust Valves | ||
| Face Angle | 44 1/2-45° | |
| Head Diameter | 1.0894-1.1000" (27.671-27.940 mm) | |
| Installed Height | 1.8978-1.9346" (48.204-49.139 mm) | |
| Minimum Margin | .0335-.0516" (.851-1.311 mm) | |
| Length | 4.1685-4.1882" (105.880-106.380 mm) | |
| Stem Diameter | .2326-.2333" (5.908-5.926 mm) | |
| Valve Springs | ||
| Free Length | 1.7965" (45.631 mm) | |
| Installed Height | 1.4961" (38 mm) | |
| Lbs. @ In. (kg @ mm) | ||
| Valve Spring Pressure | ||
| Valve Closed | 56.0-64.0 @ 1.4961 (25.40-29.03 @ 38.000) | |
| Valve Open (Intake) | 147.9-162.1 @ 1.1417 (67.09-73.53 @ 28.992) | |
| Valve Open (Exhaust) | 138.0-150.8 @ 1.1811 (62.60-68.40 @ 29.999) | |