Reference Details
- Common issue
- Standard 400, later Pontiac 400, Ram Air, or replacement engine represented as the original 400 HO assembly.
- Confidence
- reported
- Correct value
- Engine stamp, casting/date evidence, cam/carburetor details, exhaust, and paperwork should align with the 1968 Firebird 400 HO path.
- Where to check
- Engine code pad, block/head/intake/carburetor casting and date evidence, PHS paperwork, and service records
