Buick Straight-6 engine

The Buick Straight 6 was an engine manufactured by Buick from 1914-1930. Engines from 1914-1916 are known as Series 50 engines and 1916-1923 were known as the Series 40. They were OHV, like their previous engines, as Buick had been using overhead valve engines since the Model B in 1904. The engine also had the starter and the alternator driven by one belt. The engine did not have a removable cylinder head, meaning Pistons had to come out of the bottom of the engine. They had a displacement ranging from 191 to 331 cubic inches depending on year and model. The Buick Straight-8 engine replaced the straight 6 across the board in all models, starting in 1931.

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