Authenticity reference

Rear axle ratio code location

date correctness · documented

Reference Details

Confidence: documented
Correct value: Differential ratio code letters stamped on right rear inboard side of axle housing tube
Where to check: Right rear inboard side of rear axle housing tube

1 linked car page.

1966 Oldsmobile

360 hp at 5,000 rpm; 440 lb-ft at 3,600 rpm