Valves & Valve Springs (8-Valve) Specifications
VALVES & VALVE SPRINGS (8-VALVE)
| Application | Specification | ||
|---|---|---|---|
| Valve Head Refinishing Angles | |||
| Above Seat Contact Surface | 15° | ||
| Below Seat Contact Surface | 60° | ||
| Seat Contact Surface | 45° | ||
| Intake Valves | |||
| Valve Head Thickness | |||
| Standard | .039" (.99 mm) | ||
| Service Limit | .023" (.58 mm) | ||
| Stem Diameter | .2742-.2748" (6.965-6.980 mm) | ||
| Maximum Head Radial Runout | .003" (.08 mm) | ||
| Exhaust Valves | |||
| Valve Head Thickness | |||
| Standard | .039" (.99 mm) | ||
| Service Limit | .027" (.69 mm) | ||
| Minimum Margin | .027" (.69 mm) | ||
| Stem Diameter | .2737-.2742" (6.951-6.965 mm) | ||
| Maximum Head Radial Runout | .003" (.08 mm) | ||
| Valve Guide Inside Diameter | .2756-.2761" (7.000-7.015 mm) | ||
| Valve Springs | |||
| Free Length | 1.9094-1.9866" (48.498-50.460 mm) | ||
| Out-Of-Square | .079" (2.01 mm) | ||
| Pressure: Lbs. @ In. (Kg @ mm) | |||
| Valve Closed | 50.2-64.3 @ 1.63 (22.8-29.2 @ 41.4) | ||