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 MANUALSCHEVROLET1994G 20 VAN V6-262 4.3L VIN ZREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE SPRING
1994 Chevrolet G 20 Van V6-262 4.3L VIN Z
Valve Spring
1994 Chevrolet G 20 Van V6-262 4.3L VIN ZSECTION Valve Spring
Engine Liter/CID 4.3L/V6-262
All specifications given in inches.
Free Length [04]
Out Of Square Limit 0.062
Installed Height 1.687-1.750
Pressure, Lbs. @ Inches
Closed
Intake 76.0-84.0 @ 1.700
Exhaust 76.0-84.0 @ 1.700
Open
Intake 194-206 @ 1.25
Exhaust 194-206 @ 1.25
[04] Outer spring, 2.030 inches; damper spring, 1.860 inches.
All specifications given in inches.
Free Length [04]
Out Of Square Limit 0.062
Installed Height 1.687-1.750
Pressure, Lbs. @ Inches
Closed
Intake 76.0-84.0 @ 1.700
Exhaust 76.0-84.0 @ 1.700
Open
Intake 194-206 @ 1.25
Exhaust 194-206 @ 1.25
[04] Outer spring, 2.030 inches; damper spring, 1.860 inches.
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.