From 1993-2003, the Dodge 360 engine (5.9 Magnum) was a popular choice for those seeking a capable V8 powertrain. Part of the Chrysler LA engine family, the 5.9 (360ci) Magnum served as a top-tier option for models like the Dodge Ram, Durango, Dakota, and Jeep Grand Cherokee.
Factory 5.9 Magnum engines typically produced 230-260 hp and 300-345 lb-ft of torque, depending on the vehicle. Fuel economy also varied between models, averaging 11-16 mpg around town and 15-20 at highway speeds.
While no longer available from the factory, numerous crate engines are available. Crate engines are fully assembled and built to exact OEM spec and quality, making them a hassle-free alternative to rebuilding an existing engine.
When shopping for the best 5.9 Magnum crate engine for your Dodge, Jeep, or custom project, consider ATK aftermarket options from JEGS.
A performance division of VEGE Motoren, ATK has over 70 years of experience with auto parts that meet or exceed factory standards. Crate engines from ATK boast a robust factory warranty, ranging from 12-36 months, depending on the engine.
Below, we’ll detail three high-performance 5.9 crate engines from ATK, each catering to different performance and budget levels.
ATK High Performance Chrysler 360 Magnum 320 HP Stage 1 Long Block Crate Engines
First up is a Stage-1 Chrysler 360 Magnum with 320 horsepower and 410 lb-ft of torque, a significant increase over stock figures. Whether replacing a factory 5.9 or looking for a bit more performance, this long-block crate engine is an excellent entry-level option that won't break the bank.
The block and cylinder heads are made of cast iron, providing a durable foundation for your performance powertrain. What’s more, the engine’s compression ratio sits at a solid 9.0:1, striking a great balance between power output and fuel efficiency.
This 5.9 Magnum crate engine is fully assembled and ready to drop into your vehicle. Essential components like cylinder heads, an intake manifold, a distributor, a water pump, a harmonic balancer, a flex plate, and an oil pan are included.
This Stage-1 crate engine assembly from ATK is ideal for anyone seeking a reliable and powerful upgrade that doesn't need any added mods or tuning.
Learn more about this aftermarket crate engine at JEGS.
ATK High Performance Chrysler 360 Magnum 320 HP Stage 3 Long Block Crate Engines
Taking things up a notch, this Stage-3 Magnum 5.9 crate engine assembly boasts a higher compression ratio of 9.1:1. This means better power delivery and improved throttle response, all while maintaining solid fuel mileage.
The bore and stroke of this aftermarket crate engine are 4.060 in. and 3.580 in., respectively. These dimensions are designed to optimize combustion efficiency and promote a strong balance between power and responsiveness. With this 5.9 Magnum crate engine from ATK, you'll enjoy smooth and consistent performance, making every drive memorable.
In addition to Stage-1 components, this Stage-3 ATK crate engine comes with a fuel pump, a carburetor, spark plugs, and spark plug wires. This means less time shopping for individual parts and more time tinkering in the garage.
If you're looking for a more complete crate engine assembly for your project, this is the ideal choice.
Find more details about this high-performance crate engine at JEGS.
ATK High Performance Chrysler 360 Magnum 320 HP Stage 3 Long Block Crate Engines with EFI
This last ATK Stage-3 Magnum 5.9 crate engine takes performance to new heights thanks to the added benefit of electronic fuel injection (EFI). By featuring a throttle body, this aftermarket powertrain delivers an optimized air and fuel mixture, ensuring more precise fuel delivery. The result is smoother acceleration, improved engine performance, and easier cold starts.
EFI systems are also known for their adaptability to different driving conditions and altitudes, providing consistent performance no matter where you go. Moreover, the system's self-adjusting capabilities enable better fuel economy and reduced emissions, making it a more environmentally friendly choice.
This Stage-3 5.9 Magnum crate engine from ATK comes complete with all the essential components you need for a hassle-free installation, including cylinder heads, a water pump, a fuel pump, spark plugs, and spark plug wires.
If you're searching for a powerful, reliable, and efficient Dodge 360 crate engine with EFI, look no further than this aftermarket option from ATK.
Discover more about this high-performance crate engine at JEGS.
Choose the Best 5.9 Magnum Crate Engine for Your Vehicle With JEGS
Which of these four high-performance ATK crate engines is right for you?
The Stage-1 assembly: offers a solid increase in hp and torque compared to a stock motor while maintaining fuel efficiency. This crate engine is a solid pick for those on a budget or simply looking to replace a factory 5.9.
The Stage-3 assembly w/o EFI: delivers enhanced power delivery, throttle response, and superior performance with the inclusion of a carburetor and most essential components. This crate engine assembly is ideal for vintage cars, hot rods, or muscle cars with systems not built for EFI technology.
The Stage-3 assembly w/EFI: provides the advantages of electronic fuel injection, including precise fuel delivery, smooth acceleration, and easy cold starts. This engine is well-suited for modern vehicles, off-road enthusiasts, and performance-oriented street cars that can take advantage of EFI, which allows for optimized combustion.
Ultimately, your choice depends on budget, intended use, and compatibility with your vehicle's existing systems. No matter which Magnum 5.9 crate engine you choose, remember to follow proper installation procedures, regularly maintain your engine, and always prioritize engine care.
Explore these ATK high-performance crate engines and upgrade your ride today at JEGS.
