Reference Details
- Common issue
- Base 400 or later replacement engine represented as original HO drivetrain.
- Confidence
- reported
- Correct value
- 400 HO engine-code family such as WS/WV/XP/XS/YR/YZ where appropriate to transmission and emissions application
- Where to check
- Engine unit number, block stamp pad, casting/date codes, PHS paperwork and service records
