Under the Hood

The Under the Hood Channel explores the systems that make your car function correctly. Learn about car parts and systems and how to do routine maintenance.

Topics to Explore

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Who is looking to reinvent the 18-wheeler?

High gas prices have many of us feeling the pinch, but for truckers, the situation may be even more serious. Can a German visionary transform the semi and get the trucking industry back on the road?

What will "luxury car" mean in 2030?

If pressed upon to name features in the luxury cars of the future, Japanese Zen garden might not be the first thing to come to your mind. But perhaps it should be. What concept cars are influencing future autos?

Will there be a new kind of taxicab in the future?

If you've been sassed or swindled by a taxi driver, relish the thought that future taxis might be driverless. Personal rapid transportation may be coming to a city near you in the future.

What will speed mean in the future?

Speed is a constant: 100 mph will always be 100 mph. But the source of speed is up for grabs -- especially since we may have reached peak oil. Will high-speed hydrogen or all-electric cars dominate our roads one day?

How Rearview Cameras Work

You might like checking yourself out in your rearview mirror, but if you live and drive in the U.S., you might have to replace it soon with one of these gadgets. Are conventional rearview mirrors becoming obsolete? Will these devices eventually become a standard car feature?

How Alternators Work

The next time your car won't start and you're cursing the battery, you might want to blame the alternator, too. This coconut-sized car part works with the battery to generate power for your vehicle.

Can we make tailpipes that capture CO2?

It seems like a logical answer to the climate crisis: capture the carbon dioxide that our cars emit. Is it that simple? And what do sand and silica have to do with it?

What makes a digital car digital?

We're not just talking about Hollywood cars like K.I.T.T. -- computerized cars are on our roads today. They're outfitted with high-tech features, but why are they called digital?

Will car repairs in the future financially cripple you?

Maybe you budget for oil changes and new tires, but setting aside $1,600 for new headlights is a little steep. If cars are expensive to repair now, what does the future hold?

Diesel Engine Pictures

When you hear the word "diesel" you probably imagine something along the lines of a Mack truck. But what do powerful diesel engines actually look like? Check out this image gallery to see the cutting-edge diesel engines in development today.

Transmission Pictures

Manual, automatic, sequential, dual-clutch -- these are just a sample of what you'll see in this image gallery. Check out pictures of all types of transmissions right here.

Car Engine Pictures

Car engines range from small, economic 4-cylinders to insanely powerful 16-cylinder beasts. Get revved up with full-throttle photos of how they all work.

Turbocharger Pictures

Turbochargers increase engine performance without adding much weight. Check out this image gallery to see pictures of how they do it.

Classic Chevy Engines

Take a look at the powerful engines that made the Corvette, Impala, and Chevelle hi-performance machines. Learn about the history and specifications behind these memorable engines.

Chevy 265-cid V-8 Engine

The Chevy 265-cid V-8 was a performance favorite for two generations. It was considered a benchmark engine design for its days. Learn about the history and specs of this marvelous engine.

Chevy 283-cid V-8 Engine

The 283 Chevy V-8 has become one of Chevy's most revered engines -- the definitive small-block enshrined by a generation of car enthusiasts who followed. Learn more about the fuel-injected small-block Chevy V-8 that powered the Corvette.

Chevy 348-cid V-8 Engine

Dubbed "Turbo-Thrust," the 348 Chevy V-8 was the largest and most powerful Chevrolet engine you could buy in 1958-61. These powered some of the most memorable of the "performance" Chevys.

Chevy 409-cid V-8 Engine

The high-revving 409 Chevy V-8 was a favorite of racers and hot rodders. Its most glamorous home was in the lmpala Super Sport. The 409 was the standard-bearer in full-size Chevys until 1965. Learn more about it.

Chevy 396-cid V-8 Engine

After doing surprisingly well in a 500-mile race at the Daytona International Speedway, the 396 Chevy V-8 was created as a high-performance option for the Chevelle and Corvette. Learn more about one of Chevy's milestone performance engines.

Chevy 427-cid V-8 Engine

Available for the Corvette and full-size Chevrolet in 1967, the 427 Chevy V-8 superseded the 396 with its aluminum cylinder heads with enlarged ports, hotter crankshaft, and bigger carburetor. Learn about one of Chevy's milestone performance engines.

Chevy 454-cid V-8 Engine

Chevy engineers had to bend some of their rules to get as much power out of the Chevy 454-cid V-8. America's "fuel shock" would ultimately sentence big-inch high-performance cars to oblivion. Learn about one of Chevy's milestone performance engines.

How Lowriders Work

Lowriders are decked-out cars with lowered suspensions that rumble, growl and even dance their way to parks, streets and cruise-ins. So how do you lower and raise a car's suspension?

What if I tried to drive my car underwater?

People drive underwater all the time in movies. But this isn't the movies. In reality, your car would stop running almost immediately.

What if I pumped pure oxygen into my car engine instead of using the air in the atmosphere?

Engines need a certain amount of oxygen to make the car run. Exactly how much is needed? And if an engine used more, what would happen to the car?

What if I put a one horsepower engine into my car?

Most cars have a 120-horsepower engine, and SUVs have a 200-horsepower engine. But mopeds have a 1-horsepower engine, and they get great gas mileage, too. So why can't I put the small engine in the big car?