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Authenticity reference

Rear axle code

date correctness · documented

Front-end crop showing 1966 SS396 grille and hood-trim context. 1966 Chevrolet Chevelle SS 396 L78

Reference Details

Common issue
Performance ratio or Positraction claimed from appearance alone. · 1966 Chevrolet Chevelle SS 396 L78
Confidence
documented · 1966 Chevrolet Chevelle SS 396 L78
Correct value
Two-letter axle-code prefix, assembly date, and plant suffix matching the claimed ratio and Positraction/metallic-brake configuration · 1966 Chevrolet Chevelle SS 396 L78
Where to check
Stamped axle tube near carrier or inboard from backing plates · 1966 Chevrolet Chevelle SS 396 L78
Common issue
Calling any 1968 X/Y axle a Drag Pak without a source that documents the late-1968 package naming for that car. · 1968 Ford Torino GT 428 Cobra Jet
Confidence
documented · 1968 Ford Torino GT 428 Cobra Jet
Correct value
Data plate AXLE codes include X 3.91 Traction-Lok and Y 4.30 Traction-Lok · 1968 Ford Torino GT 428 Cobra Jet
Where to check
Warranty/data plate AXLE field; corroborate with axle tag/build sheet · 1968 Ford Torino GT 428 Cobra Jet

Cars With This Authenticity Marker

2 linked car pages.

Sources & Documentation