Super Series 50 – Buick combined the large Series 70 body with the economical Series 40 power plant to create the “Super”, the Series 50 line. Basic styling was also continued from 1942. but now sedans had the front fender sweep across the doors to the rear fenders as did sedanettes and convertible styles. Single stainless body trim lines began on the front fenders and ended at the rear edge of the standard rear wheelhouse shields. Exterior series identification “Super” was stamped on the crossbar between the bumper guards, front and rear. “Super” emblems were at the rear sides of the hood.

Standard equipment was the same as the Series 40, but Series 50 Buicks had two-tone, wood-grained, instrument panels.

Roadmaster Series 70 – The 1946 Roadmaster was Buick’s biggest and fastest car. It’s larger and longer straight eight engine required five inches more wheelbase most of which was contained in longer front fenders and the hood. The exterior trim was identical to the Super, except for the longer stainless moldings on the frontal sheet metal. The instrument panel was two-toned with wood grains except on convertibles, which used body-colored panels. “Roadmaster” was found on emblems that were at the rear sides of the hood and the name was embossed centered in the bumper guard crossbars front and rear.

Standard equipment was the same as for the Super, but richer interior fabrics were used in the interior.

Special and Super Series – Inline eight-cylinder: Overhead valve. Cast iron block. Displacement: 248.0 CID. Bore and stroke: 3.19375″ x 4.125″. Compression ratio: 6.3:1. Horsepower: 110 @ 3600 RPM. Five main bearings. Mechanical valve lifters. Carburetor: Stromberg AAV-16 number 380106 two-barrel or Carter 608 or 663 two-barrel.