Reference Details
- Common issue
- Replacement 455 or later Oldsmobile engine presented as original H/O equipment.
- Confidence
- reported
- Correct value
- 455cid four-barrel engine with W-45 non-A/C or W-46 A/C evidence, matching head/casting and documentation context
- Where to check
- Engine casting, head letters/casting numbers, build paperwork, registry records, and date-code evidence
