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The Cosworth Vega engine was produced in 1975 and 1976 using the 2300 engine block. The engine was de-stroked to 3.16 inches (80 mm) giving 2.0 L; 121.7 cu in (1,994 cc), with a 16-valve aluminum cylinder head, double overhead cams , forged components and solid lifters. It produced 110 hp (82 kW) and 107 lb⋅ft (145 N⋅m).
The Chevrolet Vega is a subcompact automobile that was manufactured and marketed by GM's Chevrolet division from 1970 to 1977. Available in two-door hatchback, notchback, wagon, and sedan delivery body styles, all models were powered by an inline four-cylinder engine designed specifically for the Vega, with a lightweight, aluminum alloy cylinder block.
The Cosworth Vega Twin-Cam engine is a 122 cu in (1,999 cc) inline-four with die-cast aluminum alloy cylinder block and Type 356 aluminum alloy, 16-valve cylinder head with double overhead camshafts held in a removable cam-carrier that doubles as a guide for the valve lifters. Each camshaft has five bearings and is turned by individual cam ...
In the United States, Chevrolet was the first to use Reynolds A390 in the Chevrolet Vega. The Alusil aluminium alloy is commonly used to make linerless aluminium alloy engine blocks. [7] There is no coating applied to the cylinder bore and blocks are not honed conventionally.
The Chevrolet Vega was introduced with a Chevrolet-designed 140 cubic-inch inline-4 engine; while using an aluminum engine block, the cylinder head was of cast-iron construction. The later Chevrolet Cosworth Vega was fitted with a 122 cubic-inch all-aluminum inline-4.
The 5.0 liter (305 CID) engine was the only V8 option for the 1977 model year. The standard Vega 2.3 aluminum-block engine was discontinued at the end of the model year, replaced with the Pontiac 2.5 "Iron Duke". The 1978 Monza line expanded to include rebadged holdovers from the Vega line, which ended production after the 1977 model year ...
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The Astre shared the aluminum-block 2.3 liter inline-four engine with the Vega through 1977, while the final 1977 models offered Pontiac's all-iron 2.5 liter inline-four engine as an option. The Astre was cancelled with the Vega at the end of the 1977 model year, although the wagon continued for 1978 and 1979, rebadged as part of the Pontiac ...