12 Best Car Engines Still in Production (Plus Two Announced for 2027)

There is no single “best” engine. The right choice depends on whether you value power density, towing torque, fuel efficiency, serviceability, low-end durability, or the character of a naturally aspirated or supercharged V8. This guide separates engines available in current model years from two GM engines announced for 2027, and treats reliability as an engineering judgment rather than a published lifetime guarantee.

At a glance: the engines that make the list

GM’s industrial engine portfolio is the basis for several entries, while the specific ratings above come from the named Ford, GMC, Stellantis, Cummins and GM announcements. Where an automaker does not publish one universal rating, the table says so rather than combining figures from different calibrations.

#	Preview	Product	Price
1		Chevrolet Performance 19355722 Crate Engine	$21,563.03	Buy on Amazon
2		Ford Racing M-6007-A52XS Aluminator 52XS Crate Engine	$25,255.03	Buy on Amazon
3		GM PERFORMANCE PARTS 19301326 Crate Engine - 6.2L LS3 430HP	$20,407.45	Buy on Amazon
4		Ford Crate Engine, 427 Cubic Inch, 535 HP, Small Block Ford, Each	$12,919.99	Buy on Amazon
5		GM Parts 12568758 Crate Engine for GM Truck 350		Buy on Amazon

Best engines available in current model years

Stellantis 3.0L Hurricane High Output twin-turbo inline-six

The high-output Hurricane is the clearest choice here for power density. Stellantis reports up to 540 hp and 706 Nm, and the engine appeared on the 2025 Wards 10 Best Engines & Propulsion Systems list. An inline-six gives it natural primary balance, while twin turbochargers let a relatively compact engine deliver performance associated with a much larger V8.

Choose it when acceleration, payload-friendly packaging and modern downsizing matter more than the mechanical simplicity of a naturally aspirated engine. The trade-off is a larger thermal and control system: two turbochargers, charge-air plumbing and emissions components create more parts to diagnose and maintain.

#1 Best Overall

Chevrolet Performance 19355722 Crate Engine

• Package Dimensions: 43.5" (L) x 34.38" (W) x 31.38" (H)
• Package Weight: 485.0 lbs
• Package Quantity: 1
• Country Of Origin: China

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Stellantis 5.7L HEMI V8 eTorque

The HEMI returned as an available V8 in the 2026 Ram 1500, paired with the eTorque mild-hybrid system. It is the traditional-cylinder-count option for buyers who want V8 sound and throttle feel but are willing to use electrification for smoother launches and accessory support.

This is a choice based on character and familiarity rather than maximum power density. Its large displacement provides a predictable, naturally aspirated response, while the 48-volt assist helps low-speed operation. Buyers should still account for the fuel and space penalties inherent in a large gasoline V8.

Ford 7.3L Godzilla V8

Ford lists the 7.3L Godzilla at up to 430 hp and 485 lb-ft in the 2026 Super Duty. It suits owners who prefer a straightforward gasoline engine for heavy work and do not need the added low-rpm torque or long-haul economics of a diesel.

A naturally aspirated design avoids turbocharger hardware and delivers linear response. That simplicity is valuable for conventional towing and fleet service, although the engine’s size and gasoline consumption make it less attractive for buyers who spend most of their time at maximum trailer weight.

Ford 6.7L High Output Power Stroke V8

The high-output Power Stroke is Ford’s heavy-duty diesel choice for Super Duty applications. Its strongest case is not a single headline number but the complete towing system: substantial diesel torque, a factory exhaust brake and chassis calibrations designed around sustained load.

Diesel ownership brings additional filters, selective-catalytic-reduction hardware and regeneration requirements. Reliability therefore depends heavily on correct fluid, filter and regeneration maintenance, operating temperature and the truck’s duty cycle. No independent, apples-to-apples lifetime statistic establishes a universal mileage figure.

Rank #2

Ford Racing M-6007-A52XS Aluminator 52XS Crate Engine

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• Racing Engine
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Cummins 6.7L Turbo Diesel inline-six

Cummins documents a current-generation 6.7L with an eighth-generation Holset HE300VG variable-geometry turbocharger. The inline-six layout, extensive service presence and use in heavy-duty and commercial work make it a strong candidate for long-haul and high-utilization owners.

Its serviceability advantage is practical rather than absolute: access to trained technicians and parts matters more than an engine badge when a truck is working far from home. As with every modern diesel, emissions-system care and vehicle-specific calibration determine real operating cost.

GM 6.6L L5P Duramax V8

GMC publishes 470 hp and 975 lb-ft for its 6.6L Duramax application, making the L5P a current benchmark for factory heavy-duty towing. It belongs on a shortlist when trailer weight, grade performance and integrated exhaust braking take priority over a lighter, simpler powertrain.

The diesel’s capability comes with diesel-specific fuel, oil and after-treatment requirements. Confirm the exact truck’s tow rating, axle ratio, cooling package and hitch equipment rather than assuming every L5P-equipped vehicle has identical capacity.

GM 3.0L LZ0 Duramax inline-six

The LZ0 is GM’s lighter-duty diesel alternative. Its inline-six configuration favors smoothness and compact installation in trucks and SUVs that do not need a heavy-duty diesel’s maximum trailer ratings.

It is a sensible middle ground for drivers who tow regularly but spend more miles unloaded. The correct comparison is with the gasoline engine offered in the same vehicle, not with a one-ton diesel: payload, hitch ratings and cooling limits remain vehicle-specific.

Rank #3

GM PERFORMANCE PARTS 19301326 Crate Engine - 6.2L LS3 430HP

• GM PERFORMANCE PARTS 19301326 Crate Engine - 6.2L LS3 430HP
• Dimensions in Inches (LxWxH): 42 x 42 x 31

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GM 6.2L L87 gasoline V8

GM lists the 6.2L L87 among its available engines. It is the naturally aspirated, high-output V8 choice for truck and SUV buyers who want immediate response and traditional V8 character without turbocharging or supercharging.

Horsepower and calibration vary by application, so the vehicle’s specification sheet matters. This engine makes sense when brisk unloaded performance and simple gasoline refueling outweigh the fuel savings that a smaller turbo or diesel may provide.

GM 6.2L LT4 supercharged V8

The LT4 remains GM’s supercharged 6.2L performance engine for selected cars and SUVs. A positive-displacement supercharger supplies strong response as soon as the throttle opens, giving it a different feel from a turbocharged engine even when both produce similar peak power.

It is best for performance-oriented buyers who accept higher heat loads, premium-fuel requirements and specialized service. Published output depends on the vehicle’s calibration, so compare the exact model rather than applying one LT4 number everywhere.

GM 2.8L LWN Duramax

GM’s production portfolio also lists the 2.8L LWN Duramax. It belongs here as a separate export and light-duty application, not as a universally available North American engine.

Where offered, its compact four-cylinder diesel packaging can suit smaller pickups and utility vehicles. Availability, emissions certification and service support vary by market; verify the local model catalog before treating it as an option.

Rank #4

Ford Crate Engine, 427 Cubic Inch, 535 HP, Small Block Ford, Each

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Engines announced for the 2027 model year

GM 6.6L gasoline V8

GM says an enhanced 6.6L gasoline V8 will deliver 412 hp and 472 lb-ft in its 2027 heavy-duty lineup. That makes it relevant to buyers planning a future purchase, but it should not be represented as an engine already shipping in all 2026 trucks.

Its appeal is straightforward gasoline operation for heavy-duty owners who want large-engine torque without diesel after-treatment. Wait for the production truck’s final tow ratings, axle choices and service schedule before comparing it with current diesels.

GM 8.3L Duramax V8

GM announced an available 8.3L Duramax for the 2027 HD lineup, rated at 555 hp and 1,230 lb-ft. On paper, that is the most powerful towing entry in this group and a major step beyond current heavy-duty diesel outputs.

Because it is an announcement rather than a 2026 shipping engine, real-world fuel use, payload interaction, maintenance costs and long-term durability are not yet established. Treat it as a future-model benchmark, not a proven ownership recommendation.

Which engine is best for your use?

Best for maximum towing

For a truck you will routinely operate near its maximum trailer rating, start with the Ford 6.7L Power Stroke, Cummins 6.7L or GM 6.6L L5P Duramax. Compare the complete truck’s certified tow rating, payload, axle ratio, cooling package, exhaust-brake behavior and dealer support. The announced GM 8.3L may change the output hierarchy for 2027, but it cannot yet be judged on service history.

Best for gasoline simplicity

The Ford 7.3L Godzilla and GM 6.2L L87 offer naturally aspirated response without turbocharger hardware. The 5.7L HEMI eTorque adds mild-hybrid assistance while retaining a V8 layout. These engines are attractive when annual mileage is moderate, local fuel availability matters and the vehicle will not spend most of its life pulling at the diesel’s economic sweet spot.

Best Value

GM Parts 12568758 Crate Engine for GM Truck 350

• GM Parts Engines 5.7L Gen I
• Legal for sale and use in California
• These are 2-bolt mains with one-piece rear seal
• Not designed, nor intended to be used in any marine applications
• 350 cubic inch

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Best for performance per liter

The Hurricane High Output and LT4 lead on power density within this list, using twin turbocharging or supercharging to extract substantial output from a relatively compact displacement. They reward buyers who value acceleration and packaging, but their thermal systems and premium components deserve disciplined maintenance.

Best for a lighter-duty diesel

The GM 3.0L LZ0 is the most relevant current choice for drivers who want diesel efficiency and smooth inline-six operation in a light-duty truck or SUV. The 2.8L LWN can fill a similar role in export markets where that engine is certified and supported.

Are turbo engines worth buying?

Usually, yes—provided the engine matches the vehicle and maintenance plan. The EPA’s 2025 Automotive Trends Report says more than 44% of U.S. vehicle production in model year 2024 used gasoline turbocharged engines, including hybrids and plug-in hybrids. Turbo-downsizing can deliver small-engine efficiency during ordinary driving and larger-engine power when boost is available.

The trade-off is complexity. A turbocharged engine adds exhaust heat, lubrication demands, charge-air plumbing and control hardware. Before buying, check the manufacturer’s oil specification and interval, cooling-system requirements, warranty coverage for turbo components and the vehicle’s history of software or emissions updates. A turbo engine is worth buying when its workload, service access and fuel requirements fit your use—not merely because its peak horsepower is higher.

How to judge reliability when no universal ranking exists

No independent apples-to-apples long-term reliability statistic establishes a definitive winner among these engines. A more honest comparison uses architecture, serviceability and documented application history.

• Architecture: Naturally aspirated gasoline engines generally have fewer boost-related components; modern diesels and turbo engines add hardware to meet performance and emissions targets.
• Duty cycle: An engine used for steady highway towing faces different stresses from one used for short trips, cold starts and frequent idling.
• Service support: Dealer reach, independent specialists and parts availability can matter as much as the basic engine design.
• Application matching: Verify tow ratings, cooling capacity, axle ratio and payload for the exact vehicle, not just the engine family.
• Maintenance discipline: Correct oil, diesel exhaust fluid, filters, fuel quality and regeneration practices are essential for modern boosted and diesel engines.

Bottom line

Choose the Hurricane for compact high output, the HEMI, Godzilla or L87 for naturally aspirated V8 character, the LT4 for supercharged performance, and the Power Stroke, Cummins or L5P Duramax for established heavy-duty diesel work. The LZ0 and market-specific LWN suit lighter-duty diesel use. GM’s 2027 6.6L gasoline V8 and 8.3L Duramax are promising future additions, but they remain announcements until production trucks reach customers.

Quick Recap

Bestseller No. 1

Chevrolet Performance 19355722 Crate Engine

Package Dimensions: 43.5" (L) x 34.38" (W) x 31.38" (H); Package Weight: 485.0 lbs; Package Quantity: 1

$21,563.03

Bestseller No. 2

Ford Racing M-6007-A52XS Aluminator 52XS Crate Engine

Genuine Ford part that fits your specific vehicle; Racing Engine; Part Number: M-6007-A52XS

$25,255.03

Bestseller No. 3

GM PERFORMANCE PARTS 19301326 Crate Engine - 6.2L LS3 430HP

GM PERFORMANCE PARTS 19301326 Crate Engine - 6.2L LS3 430HP; Dimensions in Inches (LxWxH): 42 x 42 x 31

$20,407.45

Bestseller No. 4

Ford Crate Engine, 427 Cubic Inch, 535 HP, Small Block Ford, Each

535 horsepower at 5600 rpm 545 left torque at 4500 rpm; Fit type: Universal Fit

$12,919.99

Bestseller No. 5

GM Parts 12568758 Crate Engine for GM Truck 350

GM Parts Engines 5.7L Gen I; Legal for sale and use in California; These are 2-bolt mains with one-piece rear seal

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.