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 MANUALSCHEVROLET1989G 30 VAN V8-305 5.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONSTORQUE SPECIFICATIONS
1989 Chevrolet G 30 Van V8-305 5.0L
Torque Specifications
1989 Chevrolet G 30 Van V8-305 5.0LSECTION Torque Specifications
Cylinder Head Bolt Tightening Sequence:
Coat threads of the cylinder head bolts with sealing compound (GM p/n #1052080 or equivalent) and install finger-tight.
Tighten cylinder head bolts, in three steps, using the sequence shown in image.
Step 1. 30 n.m (22 ft. lbs.)
Step 2. 60 n.m (44 ft. lbs.)
Step 3. 92 n.m (68 ft. lbs.)
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.