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 V8-379 6.2L DSLREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONS
1989 Chevrolet G 30 Van V8-379 6.2L DSL
System Specifications
1989 Chevrolet G 30 Van V8-379 6.2L DSLSECTION System Specifications
| Bore Diameter Standard | 3.9758-3.9789 Inch (in) |
| Maximum Out of Round | 0.0008 Inch (in) |
| Maximum Taper | 0.0008 Inch (in) |
| Deck Warpage Limit | 0.003 Inch (in) |
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.