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
Engines can be identified by the eighth character of the Vehicle Identification Number (VIN). The VIN number is stamped on a plate located on the dash and toe panel on "P" models, and on a plate at the upper left corner of dash on all other models. Engine code numbers are located at front of block, at right cylinder head or at rear of block, at left cylinder head.
| Engine | Code |
|---|---|
| 5.0L (305") TBI | H |
| 5.7L (350") 4-Bbl. | M |
| 5.7L (350") TBI | K |
| 7.4L (454") 4-Bbl. | W |
| 7.4L (454") TBI | N |
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.