Overview Reviews Product Description Differential Shim - Pinion Retainer / Pre-Load Shims - Bolts / Crush Sleeve / Pinion Nut / Shims - 7.5 in - GM 10-Bolt 1977-81 - Kit Product Videos Product Reviews Write a Review Write a Review × Shim Kit GM 7.5in 10 Bolt 1977-1981 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *