Overview Reviews Product Description Ring and Pinion - 3.42 Ratio - 30 Spline Pinion - 3 Series - 8.5 in - GM 10-Bolt - Kit Product Videos Custom Field Product Reviews Write a Review Write a Review × RICHMOND 3.42 8.5in 10 Bolt GM Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *