1983 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Front guaranteed to replace your current 1983 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Front. 1983 GMC Suburban Ring and Pinion Set comes new OEM 1983 GMC Suburban Ring and Pinion Set aftermarket new 1983 GMC Suburban Ring and Pinion Set of remanufactured 1983 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Front.