Reference Details
- Common issue
- A loose or transferred valve-cover tag, compatible displacement casting, or non-repeating regional engine number treated as proof that an engine was installed in one specific VIN
- Confidence
- documented
- Correct value
- The 1973 AMC service manual locates the engine code on a tag attached to the right-bank cylinder-head cover; H identifies 304 two-barrel, N 360 two-barrel, P 360 four-barrel, and Z 401 four-barrel, while displacement is cast into both block banks between the first and second core plugs
- Where to check
- Right-bank valve-cover tag, displacement castings above the engine mounts, left-front block pad on Georgia or Tennessee sale engines, adjacent machining-correction code, build records, and physical inspection