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 MANUALSCHEVROLET2002EXPRESS 1 TON VAN V8-8.1L VIN GREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE SPRING
2002 Chevrolet Express 1 Ton Van V8-8.1L VIN G
Valve Spring
2002 Chevrolet Express 1 Ton Van V8-8.1L VIN GSECTION Valve Spring
Valve Spring Pressure Closed 381-419 Nm (86-94 lb 1.808 inch)
Valve Spring Pressure Open 33.985 mm (216-236 lb 1.338 inch)
Valve Spring Installed Height 45.923-46.685 mm (1.808-1 838 inch)
Valve Spring Free Length 56.35 mm (2.218 inch)
Valve Spring Installed Height Shim (Service Only) 0.726 mm (0.030 inch Maximum)
Valve Spring Tension Shim (Service Only) 0.726 mm (0.030 inch)
Maximum Combined Valve Spring Installed Height and Valve Spring Tension Shim (Service Only - Shim Placed Under Valve Rotator Only) 1.524 mm (0.060 inch)
Valve Spring Pressure Open 33.985 mm (216-236 lb 1.338 inch)
Valve Spring Installed Height 45.923-46.685 mm (1.808-1 838 inch)
Valve Spring Free Length 56.35 mm (2.218 inch)
Valve Spring Installed Height Shim (Service Only) 0.726 mm (0.030 inch Maximum)
Valve Spring Tension Shim (Service Only) 0.726 mm (0.030 inch)
Maximum Combined Valve Spring Installed Height and Valve Spring Tension Shim (Service Only - Shim Placed Under Valve Rotator Only) 1.524 mm (0.060 inch)
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.