Description
8.5" Oldsmobile 31Spline 12 BOLT (factory 3.08 or 3.23, or Richmond Gear Ring & Pinions). Vendor Notes: 1968 Oldsmobile 442 (Rear) (Note: 8.5 in. 10 Bolt; 31 Spline); 1965-1971 Pontiac GTO (Rear) (Note: 8.5 in. 10 Bolt; 31 Spline); 1965-1981 Pontiac Catalina (Rear) (Note: 8.5 in. 10 Bolt; 31 Spline); 1968 Pontiac LeMans (Rear) (Note: 8.5 in. 10 Bolt; 31 Spline)
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