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 MANUALSCHEVROLET1986STEP VAN P30, 6.2 J, AUTOMATIC, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALMECHANICAL6.2L V8 DIESEL - VINS [C,J]ENGINE SPECIFICATIONSBEARING SPECIFICATIONS
1986 Chevrolet Step Van P30, 6.2 J, Automatic, 400/M40
Bearing Specifications
1986 Chevrolet Step Van P30, 6.2 J, Automatic, 400/M40SECTION Bearing Specifications
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS SPECIFICATIONS
| Application | In. (mm) | ||
|---|---|---|---|
| Main Bearings | |||
| Journal Diameter | |||
| Journal No. 1-4 | 2.9517-2.9526 (74.917-74.941) | ||
| Journal No. 5 | 2.9515-2.9524 (74.912-74.936) | ||
| Clearance | |||
| Journal No. 1-4 | .0018-.033 (.046-.083) | ||
| Journal No. 5 | .0022-.0037 (.055-.093) | ||
| Thrust Bearing | No. 3 | ||
| Crankshaft End Play | .0039-.0098 (.10-.25) | ||
| Connecting Rod Bearings | |||
| Journal Diameter | 2.398-2.399 (60.913-60.939) | ||
| Clearance | .0017-.0039 (.045-.100) | ||
| Side Play | .066-.0248 (.17-.63) | ||
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.