GM 2300 engine
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. Road & Track reported at the time that this highly-anticipated engine was "a letdown" and "extremely rough and noisy". It was available with a 1 or 2 barrel carburetor and was used in the Chevrolet Vega and similar Pontiac Astre. 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.
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 Nm).
See also GM engines GM H platform
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