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Front Axle
- GM
  - 2.56 ratio
  - 2.73 thru 4.11 ratios
- Spicer
rear axle
- 2.56 ratio
- 2.73 ratio
- 2.76 thru 3.40 ratios
- 3.73 ratio
- 4.11 ratio

Ring Gear and Pinion for 1978 Chevrolet Blazer

Fits: rear axle 3.73 ratio (change)

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