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Car : Oldmobile 43 A
Year : 1921
Engine : 4 cylinders in line
Bore and stroke :93.66×133.5 mm
Cylinder capacity : 3677 cc
Gears : 3 forward
Brake horse power : 44
Maximum speed : 62 mph
Wheelbase : 9 ft 7 ins ( 2.92 m)
Suspension : floating axles

Oldmobile is one of the oldest American car firms still surviving today (as part of General Motors), and still produces successful cars. It was founded in Lansing, Michigan, in 1987 by Ransom Eli Olds, who had inherited from his father, a factory manager, a passion for engineering. In 1899 Oldmobile, or rather the Olds Motor Vehicle Company, became Olds Motor Works, and in 1908 it became part of General Motors –of which, however, it only became Oldmobile Division in 1942.
Olds could boast that it was the first company in the world to have entered mass production. The curved Dash was launched in 1900, and in production engine ( 7 bhp), with gear transmission and 2-speed gearbox. It met with immediate success, and today is one of the most highly prized veteran cars. The 1921 43 A was the last car produced by Oldmobile to have a 4-cylinder engine. They also made a V8 from 1916 to 1923 , but in 1923 the company moved exclusively to 6 cylinders.
The 43 A’s 4-cylinder engine developed around 44 bhp. It incorporated a pump cooling system, splash lubrication, and disc clutch. A total of 13,867 43 As were manufactured; nine (43B) were built with 8-cylinder V engines.