1977 Chevrolet Pick-up Truck Ring and Pinion Set K30 - 4WD - Dana 60 - Standard Rotation - Ring and Pinion Set - 4.30 Ratio - Fits 3 Series Carrier - Will Work w/4.27 in 4WD - Front guaranteed to replace your current 1977 Chevrolet Pick-up Truck Ring and Pinion Set K30 - 4WD - Dana 60 - Standard Rotation - Ring and Pinion Set - 4.30 Ratio - Fits 3 Series Carrier - Will Work w/4.27 in 4WD - Front. 1977 Chevrolet Pick-up Truck Ring and Pinion Set comes new OEM 1977 Chevrolet Pick-up Truck Ring and Pinion Set aftermarket new 1977 Chevrolet Pick-up Truck Ring and Pinion Set of remanufactured 1977 Chevrolet Pick-up Truck Ring and Pinion Set K30 - 4WD - Dana 60 - Standard Rotation - Ring and Pinion Set - 4.30 Ratio - Fits 3 Series Carrier - Will Work w/4.27 in 4WD - Front.