Reference Details
- Common issue
- A later 427, LS7/454, crate engine, or modern Motion-style engine can be represented as a period Phase III 427.
- Confidence
- reported
- Correct value
- Engine assembly, casting/date codes, pad stamping, Motion build details, and paperwork should agree.
- Where to check
- Engine pad, block casting/date area, invoices, restoration files, and certification records
