1955 Chevrolet Nomad Ring and Pinion Set GM 55-64 Passenger car - 8.4 in. Rear - Ring and Pinion Set - 3.55 Ratio - Fits 3 Series 3.73 & Down Carrier - Rear guaranteed to replace your current 1955 Chevrolet Nomad Ring and Pinion Set GM 55-64 Passenger car - 8.4 in. Rear - Ring and Pinion Set - 3.55 Ratio - Fits 3 Series 3.73 & Down Carrier - Rear. 1955 Chevrolet Nomad Ring and Pinion Set comes new OEM 1955 Chevrolet Nomad Ring and Pinion Set aftermarket new 1955 Chevrolet Nomad Ring and Pinion Set of remanufactured 1955 Chevrolet Nomad Ring and Pinion Set GM 55-64 Passenger car - 8.4 in. Rear - Ring and Pinion Set - 3.55 Ratio - Fits 3 Series 3.73 & Down Carrier - Rear.