1966 Dodge Charger Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.90 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear guaranteed to replace your current 1966 Dodge Charger Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.90 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear. 1966 Dodge Charger Ring and Pinion Set comes new OEM 1966 Dodge Charger Ring and Pinion Set aftermarket new 1966 Dodge Charger Ring and Pinion Set of remanufactured 1966 Dodge Charger Ring and Pinion Set Chrysler 8.75 in. Rear - w/ 742 Case Housing - Ring and Pinion Set - 3.90 Ratio - 10 Spline Pinion - 1.750 in. Diameter Pinion Bearing Journal - Rear.