Reference Details
- Common issue
- A later 427 represented as born-with on a 428-delivered car, or a replacement engine treated as original
- Confidence
- documented
- Correct value
- Engine family, casting/assembly evidence, induction, dates, invoice, and later replacement history agree
- Where to check
- Engine block and heads, assembly details, intake and carburetor, Shelby invoice, Registry, ownership and restoration records