![]() All L46 350CI small-blocks were also of a four-bolt construction. This small block featured a cast-iron block, which included thicker bulkheads and more substantialized main bearing caps. The 350CI small-block V8 served as a hotter version of the 327CI before it. 350CI Small-Block Specifications and Technical Configurations Ultimately, this engine would go on to heavily influence key design points and architecture of the hugely popular LS engine platform to come. GM would continue offering the 350ci V8 for fitment into production models, for more than 30 years. GM offered this engine in two different formats, for the Corvette during the 1969 model year, a 300 HP version, and a larger 350 HP variant. Then, in 1969, the GM 327ci V8 was stroked to 3.48-inches, thereby increasing the engine’s displacement to 350 cubic inches. The 327ci V8 produced 350 HP and 358 lb-ft of torque when equipped with GM’s Rochester fuel injection system. ![]() Consumers could also pair the 283ci with an optional “Ramjet” fuel injection system, which would bring the engine’s total output to 259 horsepower.įurther revision again increased the small-block V8’s displacement, this time to 327 cubic-inches. In 1957, the small-block’s displacement would be increased to 283 cubic inches, thereby bolstering the engine’s output to an impressive 245 horsepower when paired with two four-barrel carburetors. Over the next decade, GM’s 265ci small-block would be revised on numerous occasions. This also served as a vast improvement over the Corvette’s prior 150 horsepower “Blue-Flame” inline-six engine. This initial 265ci “Mighty Mouse” small-block was rated to produce 195 horsepower, which was relatively impressive for the era in which it was produced. This was especially concerning, as the 1950s were a time when many automotive manufacturers began to dramatically increase their performance standards.įinally in 1955, after two years of production, the Corvette was offered with an optional small-block V8 powerplant. 350 Cubic-Inch Small Block Historyĭuring the earliest days of the Corvette’s initial production run, America’s sports car was regularly ridiculed for being underpowered at most every turn. This platform, in itself, would serve as a mainstay of the Corvette line for over three decades to come. In a bid to further cement the Corvette’s performance legacy, subsequent modifications to these earlier engines were made, thereby giving birth to one of General Motors’ most illustrious engine platforms. The 350ci V8 was actually a further extension of GM’s decade-old small-block engine series. Chevrolet and the 350 cubic-inch V8 go together like pancakes and syrup, carrying a long history that dates back more than 50 years. If you were to say the words “350 small-block”, any automotive enthusiast worth their salt would automatically respond by jumping headlong into a discussion of famed Chevrolet powerplants.
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