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 MANUALSCHEVROLET1997ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE SPRING
1997 Chevrolet Astro Van 2WD V6-4.3L VIN W
Valve Spring
1997 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Valve Spring
Free Length 52 mm (2.03 inch)
Pressure Closed 338-374 N at 43 mm (76-84 lbs. at 1.78 inch)
Pressure Open 832-903 N at 32 mm (187-203 lbs. at 1.27 inch)
Installed Height:
Intake 45.2 mm (1.78 inch)
Exhaust 45.2-43.43 mm (1.690-1.710 inch)
Pressure Closed 338-374 N at 43 mm (76-84 lbs. at 1.78 inch)
Pressure Open 832-903 N at 32 mm (187-203 lbs. at 1.27 inch)
Installed Height:
Intake 45.2 mm (1.78 inch)
Exhaust 45.2-43.43 mm (1.690-1.710 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.