Image: YouTube
Why is it called a HEMI?
It refers to the shape of the design
The name HEMI refers to the shape of the cylinder heads. They have a hemispherical design.
It refers to Heavy Machinery
Based on the creator, John Hemi
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What was the first car to have a HEMI?
Porsche
Volkswagen
Chrysler
It was a Chrysler that was the first to have a HEMI. This was in 1951, and it was a new line of V-8 engines.
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How much horsepower does a 5.7 HEMI have?
150
250
350
A 5.7 HEMI has 350 horsepower. There is one horsepower per cubic inch.
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How many HEMI engines has Chrysler built?
1
2
3
Chrysler has built three different HEMI engines. The first one was called the Chrysler FirePower Engine.
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Is Chrysler the only company that builds HEMIs?
Yes
Yes, but people build them on their own
No
No, Chrysler is not the only manufacturer of the HEMI. Many other auto manufacturers have mimicked the design.
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Who trademarked the name HEMI?
Dodge
Continental
Chrysler
Chrysler trademarked the name HEMI. Before that, many others had manufactured the engine, but Chrysler had dibs on the name.
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How many valves are in a HEMI engine?
2
A HEMI engine can only have 2 valves. These valves are quite large, and they must be heavier than those in a multi-valve engine.
3
4
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What is unique about a HEMI?
The shape of the cylinder heads
It's the cylinder heads which give the HEMI its name. They're hemispherical in design and shape.
The shape of the valves
The shape of the chamber in general
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The combustion chamber resembles . . . ?
A flat surface
The thick peel of an orange
The combustion chamber resembles the thick peel of an orange. That is because the piston crown is domed and protruding.
A pillow
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The intake and exhaust valve stems . . . ?
Point in different directions
In the HEMI, the intake and exhaust valves point in different directions. That means that it needs a large, wide cylinder head.
Point towards one another
Don't exist
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Why can only certain cars have a HEMI?
The engine is so wide
A HEMI engine is incredibly wide. That's why there are only so many cars that it can be installed in.
The engine is so tiny
The engine is picky about what car it goes in
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What was the HEMI engine head referred to in the 1950s?
Super Rockstar Head
Ultimate Power Head
Double Rocker Head
Chrysler referred to it as the Double Rocker Head in the 1950s. This was in reference to the complexity of the new engine.
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When was the first experimental HEMI engine produced?
Civil War
World War I
World War II
The first experimental HEMI was produced during World War II. It was for the Republic P-47 Thunderbolt fighter aircraft.
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Chrysler and what other company else built a HEMI for tanks?
Pontiac
Continental
Chrysler and Continental actually built a HEMI for a World War II tank. It was called the M47 Patton tank.
Dodge
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Which of these was a HEMI name?
FirePower
FireDome
RedRam
All of the above
These were all names for HEMIs. They were from Chrysler, DeSoto and Dodge.
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First generation HEMIs fall into which time period?
1949-1951
1951-1958
1951-1958 is the period that is known for the first generation HEMIs. You can tell it's a first generation by the rear-mounted distributor.
1955-1960
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Chrysler eventually abandoned HEMIs in favor of . . . ?
The flat head T engine
The wedge-head B engine
I hope you got that right:) The HEMI was abandoned in the '60s for the wedge-head B engine. This was a temporary abandonment.
The notch head Q engine
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What is the bore/stroke ratio on an oversquare engine?
1:1
The bore/stroke ratio on an oversquare engine is 1:1. The HEMI is known to be an oversquare engine.
1:2
1:3
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When did the HEMI have a revival?
1985
1970
1964
The HEMI enjoyed a revival in 1964. For about six years, it went out of style, but came back!
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When was a HEMI first designated as a HEMI?
1951
1958
1964
A HEMI finally got its name as a HEMI in 1964. This was when it made a reappearance on the market.
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What was the nickname for the 426 HEMI?
Dog power
Elephant engine
The 426 HEMI was massive in size and power. That's why it was referred to as the elephant engine.
The cyclone
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What was the 426 HEMI intended for?
NASA
A dirt bike
NASCAR
The 426 HEMI was actually built for NASCAR racing. It was used in a racing Plymouth Belvedere.
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The 426 HEMI was also used in . . . ?
Boats
Drag racing
The 426 HEMI was used in drag racing. It could stroke to displacements that no other engine of the time could achieve.
Police vehicles
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Engine heads of today's HEMIs are . . . ?
Taller
Wider
Flatter
Today's HEMIs, known as third-generation, have flatter cylinder heads. They're also far more complex.
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Today's HEMIs . . . ?
Are more hemispherical
Are larger
Not truly hemispherical
Todays HEMIs are not truly hemispherical in shape. But we're still glad that they kept the name!
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When was the 5.7 L HEMI released?
1990
1995
2003
The 5.7 L HEMI was released in 2003. They were installed in Dodge Ram trucks, 1500, 2500 and 3500.
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Today, HEMIs are popular for . . . ?
Muscle cars
HEMIs and muscle cars go together like peas and carrots. The 426 HEMI is the design that is used.
ATVs
Submarines
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Originally, the HEMI was produced as ​a 6-cylinder engine for . . . ?
Jaguar
Jaguar invented the 6-cylinder HEMI, before Chrysler got their hands on it. Harry Westlake developed it in 1948.
Mitsubishi
Lincoln
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Back in 1951, 180 horsepower was . . . ?
Pitiful
Average
Amazing
When Chrysler introduced the HEMI, 180 horsepower was pretty phenomenal. It doesn't seem like much now.
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When introduced in 1965, the 426 HEMI produced . . . ?
250 horsepower
350 horsepower
425 horsepower
The legendary 426 HEMI produced 425 horsepower. Wait. Why didn't they call it the 425? Such a mystery.
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The hallmark of the 1951 HEMI is the power of the . . . ?
Cylinders
Cyclones
Combustion chamber
The 1951 HEMI got its power from the combustion chamber. It was tremendously efficient for its time.
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In a HEMI head, where is the spark plug?
Under the combustion chamber
Over the combustion chamber
The HEMI is known for having the spark plug above the combustion chamber, in most cases. The valves open on opposite sides of the chamber.
To the side of the combustion chamber
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A HEMI is superior to a flat head engine in that . . . ?
There is less surface area
The HEMI has less surface area, and that means less heat loss. With that, you're able to attain more pressure and power.
There is more surface area
It's actually not superior at all
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In a HEMI, valves can be . . . ?
Small and streamlined
Large
The HEMI design allows for large valves. That means that you can get more air pouring through the engine.
Flat
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A HEMI can never have . . . ?
Four valves per cylinder
The HEMI can never have four valves per cylinder. That's why its use is limited today.
A large combustion chamber
Increased power
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You Got:
/35
Image: YouTube
About This Quiz
They're loud, they're powerful, and they consume your spare time! But how much do you really know about HEMI engines? We're going to test your knowledge of the basic parts and lingo that go hand-in-hand with hot rods. By the end, you'll be ready to get your engine rolling!
