Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998SUBURBAN K2500, 7.4 J, PART TIMEREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 1 (ENGINE MECHANICAL - 6.5L V8 DIESEL - VIN [Y,S,F])ENGINE SPECIFICATIONSENGINE VALVES & VALVE SPRINGS SPECIFICATIONS
1998 Chevrolet Suburban K2500, 7.4 J, Part Time
Engine Valves & Valve Springs Specifications
1998 Chevrolet Suburban K2500, 7.4 J, Part TimeSECTION Engine Valves & Valve Springs Specifications
WARNING: This page is about a different variant/trim than selected.
VALVES & VALVE SPRINGS
| Application | Specification | |
|---|---|---|
| Valves | ||
| Face Angle | 45° | |
| Recession Into Cylinder Head | -.034 to -0.048" (-.86 to -1.22 mm) | |
| Valve Springs | ||
| Installed Height | 1.81" (46.0 mm) | |
| Out-Of-Square | .062" (1.58 mm) | |
| Lbs. @ In. (kg @ mm) | ||
| Pressure | ||
| Valve Closed | 80 @ 1.81 (36 @ 46.0) | |
| Valve Open | 230 @ 1.40 (103 @ 35.9) | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.