The 2300 was a 2.3 L/140 in³ (2287 cc) straight-4 automobile engine produced by General Motors from 1971 through 1977. The Vega engine, as it became known, was unusual for the time with an aluminum block and cast iron SOHC head. The straight-4 or inline-4 is an internal combustion engine with four cylinders aligned in one row. ... General Motors Corporation (NYSE: GM), also known as GM, is an American automobile maker with worldwide operations and brands including Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Opel, Pontiac, Saturn, Saab and Vauxhall. ... Year 1971 (MCMLXXI) was a common year starting on Friday (link will display full calendar) of the 1971 Gregorian calendar. ... Also: 1977 (album) by Ash. ... The then-innovative Chevrolet Vega was a subcompact car sold from 1971 through 1977. ... Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ... Single overhead cam (also SOHC) refers to the internal combustion engine design where one camshaft is located above the valves. ...

Road & Track reported at the time that this highly-anticipated engine was "a letdown" and "extremely rough and noisy". In addition, an advanced feature of the engine was the fact that it did not have cast iron cylinder liners. Instead it used silicon impregnated into the aluminum. This design has now become very common. Unfortunately adequate coolant flow and jackets sometimes resulted in warping of the engine block and subsequent oil burning. GM changed the coolant pathways for 1975 and then the engine's name to Dura-Bilt in 1976 to declare that its problems had been resolved. Road & Track is an automobile enthusiast magazine in the United States, founded by two friends in 1947. ...

It was available with a 1 or 2 barrel carburetor and was used in the Chevrolet Vega and similar Pontiac Astre, and the later Chevrolet Monza and its H-body siblings: the Oldsmobile Starfire, Buick Skyhawk, and Pontiac Sunbird. Bendix-Technico (Stromberg) 1-barrel downdraft carburetor model BXUV-3, with nomenclature The carburetor, carburettor, or carburetter (see spelling differences), also called carb (in North America) or carbie (chiefly in Australia) for short, is a device that blends air and fuel for an internal combustion engine. ... The then-innovative Chevrolet Vega was a subcompact car sold from 1971 through 1977. ... The Chevrolet Vega (Pontiacs version was known as the Pontiac Astre) was a compact coupe and station wagon sold from 1971 through 1977 as a replacement for the ill-fated Chevrolet Corvair. ... It has been suggested that this article be split into multiple articles accessible from a disambiguation page. ... The H platform, or H-body, name has been used twice by General Motors. ... The Chevrolet Monza was a rear wheel drive hatchback, coupe and wagon sold from 1975 through 1980. ... There have been two small cars from Buick called the SkyHawk or Skyhawk: 1975-1980 RWD Chevrolet Monza clone (H-body) 1982-1989 FWD Chevrolet Cavalier clone (J-body) Categories: Buick vehicles | Front wheel drive vehicles | Rear wheel drive vehicles ... There have been two different vehicles bearing the name Pontiac Sunbird. ...

The 2-barrel version, known as the L11 option, also included a hotter camshaft for a power increase of 20 hp (15 kW). The engine used a 3.501 in (89 mm) bore and 3.625 in (92.2 mm) stroke and 8:1 compression. Computer animation of a camshaft The camshaft is an apparatus often used in piston engines to operate poppet valves. ...

Cosworth

A Cosworth version of this engine was produced in 1975 and 1976. It was a version of the 2300 de-stroked to 3.16 in (80 mm) with special DOHC 16-valve heads and solid lifters. It produced 120 hp (89 kW) and 107 ft·lbf (145 N·m). Cosworth Logo Cosworth is an automotive engineering company founded in London in 1958 specialising in engines for automobile racing. ... Year 1975 (MCMLXXV) was a common year starting on Wednesday (link will display full calendar) of the Gregorian calendar. ... Year 1976 (MCMLXXVI) was a leap year starting on Thursday (link will display full calendar) of the 1976 Gregorian calendar. ... A double overhead cam (also called a dual overhead cam, DOHC, or twincam) engine is a type of internal combustion engine where the camshafts that operate the intake and exhaust valves are mounted above the cylinders, and where there are separate camshafts for inlet and exhaust valves. ... For the ionic propulsion device, see Lifter (ionic propulsion device). ...

See also

• GM engines
• GM H platform