Reference Details
- Common issue
- Calling a single casting mark, a generic FE block, or a passenger-car 428 block a factory Cobra Jet block without date-code and component corroboration.
- Confidence
- reported
- Correct value
- Block scratch marks, reinforced 428 casting clues, oil-gallery-plug configuration, and date code must be evaluated together; the registry cautions that complete confidence is difficult while the block remains installed.
- Where to check
- Rear bulkhead scratch/casting area, block date code, and rear cam-plug/oil-gallery-plug area, followed by out-of-car inspection when needed.