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In 1975, the 2.0 L (122 cu in) engine in the Ferrari 208 GT4 became the smallest production V8 engine ever produced. [citation needed] The model lineage of mid-engined V8 road cars continues to the 2019–present Ferrari F8 Tributo. Five-valve-per-cylinder versions were used from 1994 until 2005 in the Ferrari F355 and Ferrari 360.
The process of evolving the engine was gradual and continuous; by 2006 almost all the 1959-specification engine components had been upgraded, so that the 2020 twin-turbo 6.75-litre engine produced over 150% more motive power and torque than at the beginning of its life, had 40% better fuel economy, and produced 99.5% less exhaust emission. [3]
A very well-designed and built steam locomotive used to get around 7-8% efficiency in its heyday. [21] The most efficient reciprocating steam engine design (per stage) was the uniflow engine, but by the time it appeared steam was being displaced by diesel engines, which were even more efficient and had the advantages of requiring less labor ...
GMC's own V8 was the 637-cubic-inch (10.4 L) unit, which was essentially a 478 V6 with two cylinders added. It shared the 5.125 in × 3.86 in (130.2 mm × 98.0 mm) bore and stroke and used a single camshaft. It was manufactured in gasoline and diesel versions, and was the largest-displacement production gasoline V8 ever made for highway trucks.
Three displacements were available during production: 401 cu in (6.6 L), 477 cu in (7.8 L) and 534 cu in (8.8 L); but however large, the 534 was very much smaller than the 1,100-cubic-inch (18.0 L) Ford GAA all aluminum 32 valve DOHC V8 (introduced during WW2), which was the largest displacement gasoline engine ever mass-produced by Ford Motor ...
[citation needed] Production of the 260 V8 ended in 1982 when the 307 became the only gasoline V8 in Oldsmobile's line. The 260 was designed for economy, and was the first engine option above the Chevrolet 250 straight-six, then later the 3.8 L Buick V6 , which was standard fitment in many Oldsmobile models by the late 1970s.
Nissan Sentra: 34 mpg. The Nissan Sentra proves that affordable and efficient cars don't have to look dorky. It's powered by a 149-hp 2.0-liter inline-four and continuously variable automatic ...
The 1957 Rochester Ramjet mechanical fuel injection version produced an even one hp per one cu in (283 hp (211 kW), an impressive feat at the time. This was the third U.S.-built production V8 to produce one horsepower per cubic inch, after the 1956 Chrysler 300B and Desoto adventure . [18]