Buick introduced the Series 40 as the entry level Buick in 1930 with a six cylinder engine. From 1936 the Series 40 was marketed as the 'Special' and was built on a 118-inch wheelbase. 1937 Buicks were restyledand for 1939 Buicks were restyled with a wide grille. From 1937 a new ohv 4,065cc (248) straight eight engine was given to the Special, and for 1941 this was uprated to 125 bhp with high compression. GM launched a new C-body of advanced design for 1948 Oldsmobile 98 and Cadillac, but Buick did not adopt it until 1949. Ned Nickles gave the Buick its 'ventiports' a dummy ventilation hole that appeared on the front wings of Buicks, 3 for the cheaper cars and 4 for the top of the range models. The Buick Special was built on a 121.5-inch GM B-platform also shared with the Oldsmobile 88 and Pontiac Chieftain.Buick updated its Special model in 1954 with the new GM B-body by Fisher that was shared with the Oldsmobile 88. Buick introduced a new 4.3-litre 'Nailhead' V8 for 1954. Oldsmobile shared its body with Buick, including the glass, but there were many brand differences.