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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE MECHANICAL - 8.1L)ENGINE SPECIFICATIONSCYLINDER HEAD SPECIFICATIONS
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Cylinder Head Specifications
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Cylinder Head Specifications
WARNING: This page is about a different variant/trim than selected.
CYLINDER HEAD
| Application | Specification | ||
|---|---|---|---|
| Valve Seats | |||
| Intake Valve | |||
| Seat Angle | 46° | ||
| Seat Width | .030-.060" (.762-1.524 mm) | ||
| Maximum Seat Runout | .002" (.050 mm) | ||
| Exhaust Valve | |||
| Seat Angle | 46° | ||
| Seat Width | .060-.095" (1.524-2.413 mm) | ||
| Maximum Seat Runout | .002" (.050 mm) | ||
| Valve Guide Oil Clearance | |||
| Intake Valve | .001-.0029" (.025-.074 mm) | ||
| Exhaust Valve | .0012-.0031" (.030-.079 mm) | ||
| Warpage | .002" (.05 mm) | ||
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.