The Most Reliable Mopar Engine, Ranked

Voting rules: Choose the engine you think is the most reliable!

Updated on May 2, 2024 06:55

When it comes to vehicle maintenance, the reliability of the engine is paramount. For enthusiasts and everyday drivers alike, choosing a car with a sturdy and dependable engine can mean the difference between a smooth ride and frequent, costly visits to the mechanic. This is particularly true for fans of Mopar engines, known for their robust performance and engineering. By participating in ranking the most reliable Mopar engines, users contribute to a valuable resource for prospective buyers and automotive enthusiasts. Every vote helps shape a clearer picture of which models stand the test of time, guiding decisions and fostering informed discussions within the community.

What Is the Most Reliable Mopar Engine?

1

87
votes
Hemi V8

Chrysler

The Hemi engine is one of the most iconic engines in Mopar history. It is known for its power and durability, making it a popular choice for high-performance enthusiasts.
The Hemi V8 is a powerful and iconic engine developed by Chrysler under their Mopar brand. It gets its name from the hemispherical shaped combustion chambers, which contribute to its exceptional performance and efficiency. The Hemi V8 engine is known for delivering impressive power, torque, and a distinct engine note.

Displacement: Varies based on specific model and year

Cylinder Arrangement: V8

Valvetrain: Overhead Valve (OHV)

Fuel Delivery: Electronic Fuel Injection (EFI)

Compression Ratio: Varies based on specific model and year
2

32
votes
Magnum V8

Chrysler Corporation

The Magnum engine was introduced in the 1990s as an update to the LA engine. It is known for its reliability and was used in a variety of Dodge and Chrysler vehicles.
The Magnum V8 is a series of engines produced by Chrysler Corporation under its Mopar brand. It is a line of powerful and reliable V8 engines designed for various automotive applications.

Engine Type: V8

Displacement: 5.2L - 5.9L

Cylinder Arrangement: V-shaped

Valvetrain: OHV

Fuel Delivery: Sequential Multi-Port Fuel Injection
3

13
votes
Cummins Turbo Diesel

Cummins Inc.

The Cummins diesel engine is one of the most reliable engines in the industry. It is used in a variety of Dodge Ram trucks and is known for its power and longevity.
The Cummins Turbo Diesel is a highly reliable and powerful engine widely used in Mopar vehicles. Renowned for its durability, this engine is designed to deliver exceptional performance and longevity. It is commonly found in heavy-duty trucks and other commercial applications.

Engine Type: Inline 6-Cylinder

Displacement: 6.7 liters

Turbocharging: Sequential, Holset Variable Geometry Turbocharger (VGT)

Fuel System: High-pressure common rail fuel injection

Horsepower: 370-400 hp (depending on model)
4

20
votes
440 V8

Chrysler Corporation

The 440 engine is a big block V8 that was used in a variety of Dodge and Chrysler vehicles. It was known for its power and durability and is still popular among Mopar enthusiasts.
The 440 V8 is a legendary Mopar engine known for its power and durability. It was introduced by Chrysler Corporation in 1966 and quickly became a popular choice among enthusiasts and muscle car enthusiasts. With its large displacement and impressive performance, the 440 V8 played a significant role in the American automotive industry.

Displacement: 440 cubic inches (7.2 liters)

Compression Ratio: Various, ranging from 8.2:1 to 10.5:1

Max Power: 375-390 horsepower (depending on model and year)

Max Torque: 480-490 lb-ft (depending on model and year)

Bore and Stroke: 4.32 in x 3.75 in (109.7 mm x 95.3 mm)
5

28
votes
Slant Six

Chrysler Corporation

The Slant Six engine was introduced in the 1960s and was used in a variety of Dodge and Plymouth vehicles. It is known for its reliability and durability and was a popular choice for economy cars.
The Slant Six is an engine produced by Chrysler Corporation, known for its durability and reliability. It is an inline-six engine characterized by its slanted cylinder block design, which allowed for a lower hoodline and improved weight distribution in vehicles. The engine was introduced in 1959 and remained in production until 1983. It gained a strong reputation over the years for its longevity and power output.

Displacement: 3.7 liters (225 cubic inches)

Configuration: Inline-six

Block Material: Cast Iron

Compression Ratio: 8.0:1

Power Output: 145-225 horsepower
6

17
votes
383 V8

Chrysler Corporation

The 383 engine is a big block V8 that was used in a variety of Dodge and Chrysler vehicles in the 1960s and 1970s. It is known for its power and durability and was a popular choice for muscle cars.
The 383 V8 is a high-performance engine produced by Chrysler under their Mopar brand. It was widely regarded as one of the most reliable and powerful engines in the Mopar lineup.

Displacement: 383 cu in (6.3 L)

Configuration: V8 (eight cylinders arranged in a V shape)

Compression Ratio: 9.5:1

Power Output: Highly variable, ranging from 270 to 440 horsepower

Torque: 375-480 lb-ft (508-651 Nm)
7

16
votes
318 V8

Chrysler

The 318 engine is a small block V8 that was used in a variety of Dodge and Chrysler vehicles. It is known for its reliability and was a popular choice for compact cars and trucks.
The 318 V8 is a compact and durable engine produced by Chrysler under its Mopar brand. It is part of the LA (Light A) engine series, which was introduced in 1964 and remained in production until 2003. The 318 V8 is renowned for its reliability and versatility, making it one of the most popular engines in Mopar's lineup.

Displacement: 5.2 L (318 cu in)

Block material: Cast-iron

Bore: 3.91 in (99.31 mm)

Stroke: 3.31 in (84.07 mm)

Compression ratio: 8.6:1 - 9.2:1
8

8
votes
273 V8

Chrysler Corporation

The 273 engine is a small block V8 that was used in a variety of Dodge and Plymouth vehicles in the 1960s. It is known for its power and durability and was a popular choice for muscle cars.
The 273 V8 is a small-block V8 engine that was produced by the Chrysler Corporation. It is part of the Mopar series of engines and was manufactured between 1964 and 1969.

Displacement: 273 cubic inches

Configuration: V8

Block material: Cast iron

Head material: Cast iron

Valvetrain: Overhead valve (OHV)
9

9
votes
Claude Vignon · Public domain

340 V8

Chrysler Corporation

The 340 engine is a small block V8 that was used in a variety of Dodge and Plymouth vehicles in the 1970s. It is known for its power and was a popular choice for muscle cars.
The 340 V8 is a high-performance engine produced by the American automobile manufacturer Chrysler under their Mopar brand. It was introduced in 1968 and quickly gained popularity among muscle car enthusiasts for its power and reliability.

Engine Type: V8

Displacement: 5.6 L

Fuel System: 4-barrel Rochester carburetor

Compression Ratio: 10.5:1

Horsepower: 275-290 hp
10

9
votes
225 Slant Six

Chrysler Corporation

The 225 Slant Six engine was introduced in the 1960s and was used in a variety of Dodge and Plymouth vehicles. It is known for its reliability and was a popular choice for economy cars.
The 225 Slant Six is a legendary engine produced by Chrysler's Mopar division. It is known for its durability, simplicity, and longevity.

Displacement: 225 cubic inches

Cylinder Arrangement: Inline 6

Valvetrain: Overhead Valves (OHV)

Firing Order: 1-5-3-6-2-4

Compression Ratio: 7.5:1 - 9.0:1 (depending on year)

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Ranking factors for reliable engine

Longevity

The engine should have a reputation for lasting a long time, with minimal maintenance and repair required.
Power and performance

The engine should be powerful and perform well, without being prone to breakdowns or excessive wear and tear.
Fuel efficiency

The engine should be fuel-efficient, helping to save money on gas and reduce emissions.
Ease of maintenance

The engine should be easy to maintain, with readily available replacement parts and simple repair procedures.
Resale value

The engine should have a good resale value, indicating that it is sought after by buyers and holds its value well over time.

About this ranking

This is a community-based ranking of the most reliable Mopar engine. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or engine is missing, feel free to help improve the ranking!

Statistics

2696 views
207 votes
10 ranked items

Voting Rules

A participant may cast an up or down vote for each engine once every 24 hours. The rank of each engine is then calculated from the weighted sum of all up and down votes.

More information on most reliable mopar engine

When it comes to classic American muscle cars, Mopar engines have been a popular choice among car enthusiasts for decades. Mopar, which stands for Motor Parts, is the official parts and service division of the Chrysler Corporation. The company has produced a variety of engines over the years, ranging from small block V8s to big block monsters. However, not all Mopar engines are created equal. For those looking for a reliable Mopar engine, there are a few options that stand out. The 440 cubic inch V8, which was produced from 1966 to 1978, is often considered one of the best Mopar engines ever made. Known for its power and durability, this engine was a popular choice for muscle cars like the Dodge Charger and Plymouth Road Runner. Another reliable Mopar engine is the 340 cubic inch V8, which was produced from 1968 to 1973. This engine was known for its high-revving power and was a popular choice for drag racing enthusiasts. Ultimately, the most reliable Mopar engine will depend on your specific needs and preferences. Whether you're looking for power, durability, or a combination of both, there are plenty of options to choose from.