1955 Buick Engine, Fuel and Exhaust Systems Maintenance
3-1 FUEL SYSTEM CHANGES Carburetors A new larger 4-barrel carburetor is used .on Series 60-50-70 engines. A 4-barrel carburetor replaces the 2-barrel carburetor previously used on Series 50 engines. The 1955 carburetor has increased throat diameters which increase efficiency and power output, and is 5/16" lower in height which allows a decrease in hood line. [...]