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GM 8.5", Oldsmobile, 3.90 Ratio, Fits 3.23 & Down, Richmond Ring & Pinion
GM 8.5", Oldsmobile, 3.90 Ratio

Price: $379.00

Product Code: GM8.5O-390-RG

Description Vehicle Applications
GM 8.5" 12 bolt Oldsmobile
12 bolt cover, 10 bolt gear
3.90 Richmond Ring & Pinion

1964-1972 442
1964-1972 Cutlass

Differential: GM 8.5" 'O', Fits 3.23 & Down
Gear Ratio: 3.90
Tooth Count: 43/11
Pinion Splines: 27
Ring Gear Bolts: 10 (not included)
Manufacturer: Richmond
Warranty: 1 Year

"RICHMOND is the leading manufacturer of professional quality, hi-performance ring and pinion sets. For over 80 years, the Double Diamond has signified the highest quality gears in the racing industry!

The superior quality of Richmond Performance Products is a result of continual research and development, outstanding design and state-of-the-art manufacturing. Extensive testing is performed on all Richmond products. Engineered to perform faster and more reliable, our products are winners both at the Daytona 500 and U.S. Nationals for decades!"

Winners Run Richmond!
  • 1 Year Warranty*

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