1978 GMC C25 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV | 1 | 8.5 In., 8.625 In., 8.75 In., or 8.875 In. Ring Gear
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1978 GMC C25 equipped with 7.4L V8 Gas OHV, 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
8.5 In., 8.625 In., 8.75 In., or 8.875 In. Ring Gear
1 Per Vehicle
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