Reference Details
- Common issue
- Engine represented as original SD-455 equipment without the SD-specific block usage code matching the car's year and transmission.
- Confidence
- reported
- Correct value
- W8 for a 1974 SD-455 with manual transmission; Y8 for a 1974 SD-455 with automatic transmission
- Where to check
- Stamped on the front of the engine block, toward the deck on the passenger-side cylinder bank
