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.
Engine Identification
Engine may be identified by the eighth character of Vehicle Identification Number (VIN) located on top of instrument panel near lower left corner of windshield.
Engine code and partial VIN number is stamped on cylinder block in different areas according to application. The first character indicates manufacturer and second character indicates the year. See Fig 1 .
| Application | Engine Code | VIN Code |
|---|---|---|
| TBI ("A" & "W" Bodies) | LR8 | R |
| TBI ("N" Body) | L68 | U |
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.