Reference Details
- Common issue
- A replacement or restamped block may have a blank, inconsistent, or incorrectly located identification stamping.
- Confidence
- documented
- Correct value
- 440 engine identification number format includes plant code, cubic-inch displacement, date code, and daily serial number; 440 boss location is left side, rear of block, near oil pan flange.
- Where to check
- Engine identification number boss on the subject engine block; compare the stamped plant/displacement/date/sequence to the vehicle records and build chronology.