Why do American cars have so little horsepower?

Large displacement American V8s are typically pushrod engines, and this engine design has characteristics that make it more difficult to produce high horsepower per liter.
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Why do American cars have such large engines?

In America there isn't a tax on engine size. Whereas other countries do have taxes. The bigger the engine, the bigger the cost (of the tax). So it simply doesn't matter how big the engine is here (in America).
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Why do European cars have smaller engines?

Over in Europe, the strategy to meet stringent emissions regulations has resulted in the downsizing of engines and the addition of turbochargers to make up for the power deficit. As such, the average engine size in Europe is anywhere between 1.3- and 1.9-liters.
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Why did horsepower drop in the 70s?

Cadillac's (8.2-liter) V8 was rated at 400 hp (406 PS) in 1970, but dropped to 365 hp (370 PS) in 1971 as a result of GM slashing the compression ratio to suit low-lead fuel.
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Why did cars get slower in the 70s?

These changes initially were due to a reduction in compression ratios to allow engines to run on lower octane unleaded gasoline rather than fuel using dangerous and polluting lead additives (a move taken initially by GM, but which all other major American automotive manufacturers adopted).
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Why Did The American Car Industry Fail?



Are old muscle cars fast?

Fastest Classic Muscle Car: 1964 Pontiac GTO

Few cars combined high-level speed and horsepower like the 1964 Pontiac GTO. That's why collectors still talk about this magnificent ride today. Designed by John DeLorean, Russell Gee, and Bill Collins, it could go from zero to 60 mph in little more than 6.6 seconds.
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Why did American cars fail?

"Basically the American car industry had to trash its whole model lineup, top to bottom, V-8 engines, longitudinal automatic transmissions. We had to switch to V-6, front-wheel drive, transverse mounted. There was way too big of an engineering and financial task to be able to accomplish that.
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How much hp did old muscle cars have?

small block V-8 had 370 gross hp in 1970 (with 11:1 compression), then a 330 hp gross rating (with 9:1 compression) for 1971-1972 with a 255 hp net rating. The mighty Chrysler 426 cu. in. Hemi kept its high compression and 425 hp gross rating for 1971 and showed 350 net hp.
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Why did they stop making muscle cars?

The popularity of muscle cars declined through the early 1970s, due to factors including the Clean Air Act, the fuel crisis and increasing insurance costs. The 1973 oil crisis resulted in rationing of fuel and higher prices. Muscle cars quickly became unaffordable and impractical for many people.
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Why do Americans use V8 cars?

V8 engines are much more common based on the lower costs of gas pricing. Pickup trucks in the US are practical and full of utility here whereas in Europe with gas being (2 and ... Taxes play a larger role in the types of cars that are designed and built in each country than many people realise.
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Do smaller engines wear out faster?

So, each cylinder is working about 13 per cent harder. It's also spinning about 17 per cent faster while it's doing that. It is, however, a big jump from there to 'it'll wear out faster'. This depends on many other factors including the calibre of materials used and the underlying R&D.
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Why are modern engines so small?

Smaller displacement generally means greater fuel efficiency, and modern designs also produce more power. Newer cars have smaller engines because that new I4 engine can produce as much power as the last car generation's V6, and use less fuel doing so.
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Why did old V8s make so little power?

Large displacement American V8s are typically pushrod engines, and this engine design has characteristics that make it more difficult to produce high horsepower per liter.
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Why do European cars have less horsepower?

The reason for the low horsepower rating was rather simple: economics. Cars were taxed based on their engine size. One fact has to be stressed: one horsepower equals 746 watts. Actually one mechanical horsepower (also known as an Imperial horsepower) equals 550 foot-pounds per second, or 745.7 watts.
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How high can a V8 rev?

Its peak power is still probably around the 9,200-9,400 RPM range with a drop-off as the engine spins faster, so tuning those higher revs for power will have to come later. We've seen other high-revving LS builds with redlines in the 9,200 RPM range, so this makes sense.
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Why is Hellcat being discontinued?

Dodge is ending production of its iconic, V-8-powered Hellcat Challenger and Charger muscle cars models by 2023 as the brand transitions to a mix of electrified EV, hybrid, and plug-in drivetrains in the face of government regulations forcing battery-powered vehicles.
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Why is Dodge crushing Hellcats?

Dodge has announced that it will reveal a high-performance electric muscle car to stir the passions of those who believe EVs are bland and uninspired. This coming of “electric muscle” is probably why Dodge is killing the Hellcat.
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Is Dodge killing the Hellcat?

Dodge will show off its new electric concept vehicle early in 2022, and discontinue its roaring Hellcat V8 engines, after 2023, the brand's chief executive recently confirmed to an automotive news outlet.
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Is it possible to have 5000 horsepower in a car?

Devel Sixteen was said to be able to churn out an eye-popping 5000 hp from a quad-turbo V16 engine with a top speed that would exceed 300 mph (480 km/h). Production cars that broke the 1000 hp barrier have only recently come into being, so the Devel Sixteen seemed far ahead of its time.
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How much horsepower did the 426 Hemi actually make?

Auto Machine reveals the 426 Street Hemi's true power potential. The Land and Sea dyno reveals the Hemi's actual output: 494.4 hp at 5,950 rpm and 498.3 lb-ft at 4,500 rpm. At 5,000 rpm, where Chrysler claimed 425 hp, it makes 459.3 hp.
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How much HP did a 426 Hemi have?

MoPar 426 Hemi

The 426 street Hemi was rated at 425 horsepower from the factory. This Chrysler dyno sheet from decades ago and this close-to-stock dyno session of a new 426 Hemi both put the gross horsepower rating at about 470 horsepower without full exhausts and other engine-driven accessories.
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Does Japan like American cars?

Reliable, fuel-efficient cars like the Honda Civic and the Toyota Prius have sustained their popularity over time and their sales show no signs of slowing down any time soon. However, that's not the case for American cars in Japan. It's practically the opposite, as it turns out, American cars don't sell well in Japan.
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Are Japanese cars better than American cars?

Even though Japanese vehicles are considered to have better performance than American ones, American cars have improved significantly over the years based on quality and performance. They also have better transmission and engines. However, they both lead to a decrease in performance as they reach the 10-year margin.
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Why are foreign cars better than American?

Fuel efficiency.

Overall, foreign-made cars have better fuel efficiency when compared to American models. As a result, you won't need to fill the tank as often, and you'll end up spending less money on gas. A car with excellent fuel efficiency is also better for the environment.
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