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The first version of the "big-block" V8 Chevrolet engine, known as the W-series, was introduced in 1958. [12] Chevrolet designed this engine for use in passenger cars and light trucks. This engine had an overhead valve design with offset valves and uniquely scalloped valve covers, giving it a distinctive appearance
A long block does not include the fuel system, electrical, intake, and exhaust components, as well as other components. A long block may include the balancer/damper, timing cover, oil pan and valve covers. [5] A long block engine replacement typically requires swapping out parts from the original engine to the long block.
Even with the benefit of today's technology (aftermarket rods and stroker cranks), the upper limit of a Y-block is about 348 cu in (5.7 L), while the Chevrolet could be modified well past the factory limit of 400 cu in (6.6 L). The result was the introduction in 1958 of the 332 CID "big block" Ford FE engine which ultimately grew to 428 cu in.
A rocker cover, (UK), or valve cover (elsewhere) is a cover that encloses the rocker arm in an internal combustion engine, bolting with a gasket seal to the engine head. Engines with more than one head (such as a V8 ) will have multiple rocker covers.
The Buick V8 family can be divided into two sizes, big-blocks and small-blocks (block size classification refers to the engine block's bore spacing and external dimensions, not displacement). All 1953–1966 Buick V8s and the 1967–1976 "big-block" engines shared a 4.75 in (121 mm) bore spacing. The small-block was produced from 1961 to 1981.
Engine offerings were carried over from 1971 with the switch to "net" horsepower ratings including 170 hp (127 kW) for the standard two-barrel 400 cu in (6.6 L) Turbo Fire V8, 210 hp (157 kW) (240 hp (179 kW) with optional dual exhaust) for the four-barrel Turbo Jet 400 big-block V8 and 270 hp (201 kW) for the four-barrel dual exhaust 454 cu in ...