Authenticity reference

Engine suffix for L78 drivetrain

fraud detection · documented

Local crop showing hood, cowl, and front sheetmetal context. 1970 Chevrolet Nova SS 396 L78

Reference Details

Common issue: A generic 396 badge or replacement big-block does not establish L78 identity.
Confidence: documented
Correct value: CKO or CKQ for L78 manual; CTY for L78 TH400; CKP/CKT/CKU indicate L89 aluminum-head variants in the cited table
Where to check: Engine assembly stamp pad and supporting drivetrain documents

1 linked car page.

1970 Chevrolet

Chevrolet factory Nova SS package with L78 engine option