What is the CC of a 5.7 HEMI?
The displacement is about 5,700 cubic centimeters (5.7 liters). In precise terms, the engine is commonly listed as 345 cubic inches, which converts to roughly 5,653–5,654 cc depending on rounding. The 5.7 HEMI is a V8 used across Dodge, Ram, Jeep, and Chrysler models.
Displacement explained
Engine displacement, expressed in cubic centimeters (cc) or liters, represents the total swept volume of all eight pistons. For the 5.7 HEMI, eight cylinders with a bore of 3.92 inches and a stroke of 3.58 inches yield a displacement of about 345 cubic inches, which is roughly 5,653–5,654 cc. Manufacturers typically quote 5.7 L (5,700 cc) as the official figure, with slight rounding differences.
Key figures at a glance
Below are the primary displacement figures used to describe the 5.7 HEMI in common references.
- 5.7 liters (L) — the standard automotive specification used by Chrysler/ Stellantis.
- 345 cubic inches (cu in) — the traditional imperial unit commonly cited in older catalogs.
- Approximately 5,653–5,654 cubic centimeters (cc) — the exact cc derived from 345 cu in using 1 cu in = 16.387 cc; rounded variations exist.
These figures reflect how the same engine is described in different measurement systems and highlight the reason you may see slightly different numbers across sources.
Why the CC matters
Engine displacement gives a baseline sense of the engine’s size and its potential to move air, which in turn influences torque, power, and fuel economy. Other factors—valve timing, compression, and fuel system design—also shape the engine’s performance, but displacement remains a foundational metric.
Notes on the 5.7 HEMI
The 5.7 HEMI is a modular V8 that has powered a broad lineup since its introduction in the early 2000s. Typical bore and stroke values are listed as 3.92 inches and 3.58 inches respectively, which together yield roughly 345 cubic inches of displacement (about 99.6 mm bore and 90.9 mm stroke in metric terms).
Summary
The 5.7 HEMI’s displacement is commonly described as 5.7 L or 345 cu in, translating to approximately 5,653–5,654 cc. The official labeling in most records is 5.7 L, with the precise cc depending on rounding and measurement conventions.
How many cc is a 5.7 Hemi?
A 5.7 Hemi engine has a displacement of 5,654 cubic centimeters (cc), which is also known as 5.7 liters or 345 cubic inches. This displacement is a result of its internal dimensions, specifically a bore of 3.9173.9173.917 inches and a stroke of 3.5783.5783.578 inches.
- Displacement: 5,654 cc
- Liters: 5.7 liters
- Cubic Inches: 345 cubic inches
Is the Hemi 5.7 a good engine?
The 5.7L Hemi is generally considered a good and reliable engine, known for its power and durability, and can last for many miles with proper maintenance. However, it is not without known issues, the most significant being the "Hemi tick" caused by lifter and camshaft failure in some models. Other potential problems include early spark plug wear, weak exhaust manifold bolts in certain years, and potential oil consumption or sludge if not maintained correctly.
Pros
- Power and performance: The Hemi delivers strong power and torque, making it a capable engine for towing and performance vehicles.
- Reliability: With proper care, many owners report high mileage and good long-term reliability.
- Durability: It is built for tough use and is considered a solid engine with easy access to replacement parts.
Cons
- "Hemi tick": The most common issue is a ticking noise caused by a design flaw leading to lifter and camshaft failure, particularly in some model years like 2011-2012 Ram trucks.
- Fuel economy: The 5.7L is not the most fuel-efficient engine, especially in city driving, due to its large displacement.
- Multi-Displacement System (MDS) issues: The cylinder deactivation system designed to improve fuel economy can have reliability problems.
- Other issues: Some models can experience early spark plug wear or have weak exhaust manifold bolts.
Tips for potential buyers
- Check maintenance history: A vehicle with good maintenance records, especially for oil changes, is crucial for a Hemi's longevity.
- Be wary of specific model years: Some years had more documented problems. For example, certain LX-platform cars from 2005-2006 had issues with stalling and hesitation, while 2011-2012 Rams were more prone to the "Hemi tick".
- Consider an extended warranty: Given the potential for costly repairs like lifter replacement, an extended warranty is a good idea, particularly for used vehicles.
- Get a pre-purchase inspection (PPI): This can help uncover any existing problems before you buy.
Is a 5.7 Hemi a 345?
Yes, a 5.7L Hemi engine is a "345" because 5.75.75.7 liters is equal to 345345345 cubic inches. This cubic inch displacement is a common identifier for this engine, which has been used in various Chrysler, Dodge, and Jeep vehicles since 2003.
- Displacement: The "345" is the engine's displacement in cubic inches, a traditional metric for engine size.
- Application: It's the designation for the 5.7-liter Gen III HEMI V8, which has been a popular option in vehicles like the Dodge Ram, Charger, Challenger, and Jeep Grand Cherokee.
- Identification: Many models with this engine feature a "345" badge, though some prefer to use the "5.7L" badge for clarity.
Is a 5.7 V8 a 350?
The Chevrolet 350 engine is part of the Small Block V8 family, which has been a cornerstone of General Motors' engine lineup since its introduction in 1955. The 350 variant, with its 5.7-liter displacement, debuted in 1967 and quickly gained popularity for its power and durability.
