1979 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear guaranteed to replace your current 1979 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear. 1979 GMC Suburban Ring and Pinion Set comes new OEM 1979 GMC Suburban Ring and Pinion Set aftermarket new 1979 GMC Suburban Ring and Pinion Set of remanufactured 1979 GMC Suburban Ring and Pinion Set K1500 Suburban - 4WD - GM 8.5 & 8.6 in. - 10 Bolt - Ring and Pinion Set - 3.08 Ratio - Rear.