Engine Short Block: What It Is & Why You Need One - Crawford Performance

Engine Short Block: What It Is & Why You Need One

So, you want more power from your Subaru. It’s a natural next step, but simply turning up the boost on a stock motor is a risky game. The factory internals were never designed for the stress of a serious performance build. To do it right, you need to start with a stronger foundation. This is where a professionally built engine short block becomes essential. It’s the heart of any reliable high-horsepower build, engineered with forged components to handle the abuse. This guide will walk you through what a short block is, why you need one, and how to budget for a build that delivers power you can count on.

Let's be direct: building a high-horsepower Subaru that you can actually trust is a serious undertaking. You’ve probably heard the horror stories of stock engines letting go when pushed too hard. That’s where a professionally built short block comes in. It’s the solution for adding significant power without sacrificing daily-driver reliability. While the initial Crawford built EJ25 price is a key part of your budget, it’s also an investment in peace of mind. We’ll explore how our engines are engineered to overcome common failure points, what makes them so durable, and why starting with a solid foundation is the most cost-effective path to achieving your performance goals.


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Key Takeaways

  • Power and Durability Go Hand-in-Hand: A Crawford engine delivers serious horsepower without sacrificing the reliability you need every day. It’s built with premium forged components and a race-proven design to give you the best of both worlds.
  • Plan for the Complete Build: A successful engine project goes beyond the short block. Budget for the essential installation kit, which provides all necessary gaskets and seals, and a professional tune to safely unlock your engine's full potential.
  • Build with Confidence: Your investment is protected by a 12-month/12,000-mile warranty and backed by our expert technical support team. We're here to help you through the entire process, from installation questions to tuning advice.

Understanding Engine Terminology

When you start planning a serious power upgrade for your Subaru, you'll quickly run into a lot of new terms. Short block, long block, crate engine—it can feel like learning a new language. But understanding these terms is the first step to making a smart investment in your car's performance and longevity. Getting this right means you can confidently choose the right foundation for your build, whether you're aiming for a reliable daily driver with more punch or a full-blown track machine. Let's break down exactly what these components are so you can decide which path is right for your project.

What is an Engine Short Block?

Think of a short block as the heart of your engine, pre-assembled for strength and reliability. It is the engine block itself, but it comes with the core rotating components already installed. This includes the crankshaft (which converts the up-and-down motion of the pistons into rotation), the connecting rods, and the pistons. These are the parts that take the most abuse when you start adding power, which is why a professionally built short block is such a popular upgrade. It provides a solid, reliable foundation that’s ready to handle more horsepower than the stock components ever could.

The Core Components: Bottom End Explained

The term "bottom end" is often used interchangeably with "short block." It refers to the lower half of the engine, where all the rotational magic happens. A performance short block includes the main engine block casting, which houses the crankshaft, connecting rods, and pistons. In a high-quality build, these parts are precisely machined, balanced, and assembled with the correct piston ring gaps already set. This meticulous assembly is what makes a built short block so appealing; it takes the most difficult and critical part of an engine build and puts it in the hands of experts.

What a Short Block Doesn't Include

It’s just as important to know what a short block is missing. A short block does not include the cylinder heads, which contain the valves, camshafts, and springs—collectively known as the "top end." You will also need to source other essential parts separately, such as gaskets, seals, the oil pump, water pump, and oil pan. This is by design, as it allows you or your mechanic to transfer over your existing cylinder heads (if they are in good condition) or select upgraded heads that match your specific performance goals and budget.

Short Block vs. Long Block

The main difference between a short block and a long block is the inclusion of the cylinder heads. A long block is a more complete package, containing everything in a short block plus the cylinder heads and the valvetrain components (camshafts, valves, etc.) already installed. This option can save you some assembly time, but it also gives you less flexibility if you wanted to use custom or ported cylinder heads. For many Subaru builds, starting with a robust short block and pairing it with the right heads is the preferred route for achieving specific power targets.

Long Block vs. Complete Engine

Taking it one step further, a complete engine (sometimes called a deluxe long block or turnkey engine) is the most comprehensive option available. It includes everything a long block has, plus most of the external accessories needed to make it run. This typically includes the intake manifold, throttle body, fuel injectors, oil pan, and sometimes even the turbocharger and exhaust manifold. A complete engine is designed to be dropped into the car with minimal extra assembly, making it the fastest but also the most expensive option for an engine replacement.

Other Engine Assembly Options

If you're an experienced engine builder or want total control over every single component, there are more hands-on options available. These paths require a high level of technical skill and specialized tools but offer the ultimate in customization. They are generally reserved for those who are comfortable with the intricate process of measuring clearances and assembling an engine from the ground up. This approach allows for a truly bespoke setup tailored to very specific racing applications or performance characteristics.

Bare Blocks

A bare block is exactly what it sounds like: just the engine block casting itself, with no internal moving parts. It’s a clean slate for the master engine builder. Starting with a bare block means you are responsible for selecting, measuring, and installing every single component, from the crankshaft and pistons to all the bearings and seals. This is the most labor-intensive route, but it offers complete control over the final product, making it a choice for dedicated racers and expert mechanics building a no-compromise competition engine.

Rotating Assemblies

A rotating assembly is a kit that bundles the core internal components together. It typically includes a matched set of a crankshaft, connecting rods, and pistons. This is a great option if you already have a good, usable engine block but want to upgrade the "guts" to handle more power. Buying a balanced rotating assembly ensures all the key parts are designed to work together harmoniously, saving you the complex task of matching individual components while still allowing you to handle the final assembly yourself.

What is a Crate Engine?

The term "crate engine" simply refers to any engine—whether it's a short block, long block, or complete assembly—that is sold as a pre-built unit and shipped to you in a crate. It’s a broad term that covers a wide range of options, from factory replacements to high-performance builds. When you purchase one of our Crawford Performance built short blocks, you are buying a crate engine designed for superior strength and reliability, ready to serve as the foundation for your high-horsepower Subaru.

Choosing Your Path: Rebuild or Replace?

Once you understand the terminology, the big question becomes: should you rebuild your existing engine or replace it with a pre-assembled one? This decision depends on your budget, timeline, power goals, and mechanical comfort level. Rebuilding your own engine can be a rewarding experience, but it also comes with significant risks and downtime. On the other hand, starting with a professionally built engine provides a proven, reliable foundation that often comes with the peace of mind of a warranty, getting you back on the road faster and with more confidence.

Rebuilding Your Engine: A Cost-Benefit Look

Rebuilding your current engine can sometimes seem like the cheaper option upfront, but costs can add up quickly. You'll need to factor in machine shop services, the price of individual parts, and specialized tools. More importantly, it takes time—weeks or even months of your car being out of commission. A major benefit of buying a built short block is the massive time savings. You can have the new block ready to go, allowing you to swap over the top-end components from your old engine and drastically reduce the vehicle's downtime.

Who is a Short Block For?

A built short block is the perfect solution for the Subaru enthusiast who wants to make significant power reliably. If your goal is to push your WRX or STI well beyond its factory limits, a forged internal short block is not just an upgrade; it's a necessity. It’s for the owner who understands the value of a professional assembly for the engine's most critical components but still wants to be involved in the rest of the build. It eliminates the biggest risks associated with engine building while providing a solid platform for future upgrades.

Why Many Shops Prefer Crate Engines

Professional repair and performance shops often prefer installing crate engines for two main reasons: quality control and warranties. A professionally assembled engine from a reputable builder like Crawford Performance is built in a controlled environment to precise specifications, reducing the chance of human error. Furthermore, our engines come with a 12-month/12,000-mile warranty. This protects both the shop and the customer, providing a level of assurance that is rarely offered on a custom, one-off engine rebuild. This guarantee of quality and support is why a crate engine is often the smartest choice.

What's So Special About a Crawford EJ25 Engine?

When you're looking to get more out of your Subaru, the engine is the heart of your build. A Crawford-built EJ25 isn't just a collection of parts; it's a complete system engineered for performance and reliability. We approach every engine with a philosophy that balances raw power with the kind of durability you can count on, whether you're on the track or a winding back road. It’s about creating an engine that not only produces impressive numbers but also delivers a smooth, responsive driving experience.

Our reputation is built on a deep understanding of the Subaru platform, from the classic WRX to the rugged Crosstrek. We don't just assemble engines; we re-engineer them to overcome common failure points and handle serious power. This commitment to quality and thoughtful design is what sets a Crawford engine apart from the rest. You're not just buying an engine; you're investing in decades of race-proven expertise.

Starting with a Strong Foundation: Our Build Quality

Everything starts with a solid foundation. We build our celebrated Subaru short blocks using only premium components that we’ve tested and proven. This includes high-strength forged pistons and meticulously prepared engine blocks that ensure strength and precision. We believe that true performance comes from quality you can see and feel. By focusing on these core components, we create an engine that can withstand the stress of high-boost applications while maintaining the reliability you need for daily driving. This attention to detail is the cornerstone of every engine that leaves our shop.

How Does It Perform?

So, what does all that quality mean for you behind the wheel? It means an engine that’s designed for balanced and efficient power. Our short blocks are engineered to deliver improved engine performance, which translates to more power at the same boost level, reduced engine pressure, and a better vacuum at idle. This isn't just about chasing a peak horsepower number; it's about creating a broader, more usable powerband. You’ll feel the difference in how your car responds and pulls through every gear. It’s a smarter, more sustainable way to make power, ensuring your engine runs strong for years to come.

Let's Talk Numbers: Power Output

Let's get straight to the numbers you're looking for. Our engines are built to handle serious power. For example, the S3L-I short block for the Subaru STI is rated for up to 770 horsepower, giving you incredible headroom for your build. This level of performance is a direct result of the premium components and precision engineering we put into every unit. While these high-performance short blocks typically range from $4,999 to $5,999, they represent a solid investment in your vehicle’s potential. This power and reliability are what make Crawford the go-to choice for enthusiasts who demand the best.

How Much Does an EJ25 Engine Short Block Cost?

Figuring out the cost of a new engine build can feel like a moving target. The final price isn't just the number on the short block itself; it’s a combination of the core engine, any upgrades you choose, necessary installation components, and labor. Understanding each piece of the puzzle helps you budget accurately and build the reliable, high-horsepower Subaru you’re aiming for. Let's walk through what goes into the total cost so you can plan your project with confidence.

Understanding the Base Package Cost

The foundation of your build is the short block itself. Think of this as your entry ticket to serious performance. Our Crawford Performance built Subaru short blocks provide a professionally assembled and warrantied core, ready to handle more power than a stock engine. The base price covers the essential components, precision assembly, and the peace of mind that comes from our decades of experience. This starting point ensures you have a solid, reliable foundation before you even think about adding other performance parts.

General Short Block Market Pricing

When you start shopping for a short block for your Subaru, you'll see a wide range of prices. Standard options on the market typically fall between $1,000 and $3,000. It's crucial to remember, though, that this is just the starting point. The final price isn't just the number on the short block itself; it’s a combination of the core engine, any upgrades you choose, and the necessary installation parts. For high-performance applications like ours, a Crawford short block ranges from $4,999 to $5,999. These engines are engineered to handle significant power, with some models rated for up to 770 horsepower. This investment provides a robust foundation for your build and ensures the reliability you need, making it a smart choice for serious enthusiasts who want to do it right the first time.

Exploring Premium Component Upgrades

This is where you tailor the engine to your specific power goals. The base short block is great, but if you're chasing higher horsepower for the track or demanding off-road conditions, you’ll want to consider premium components. Upgrades like forged pistons, stronger connecting rods, and performance bearings increase the engine's strength and reliability under extreme stress. These options add to the initial cost, but they are a critical investment for ensuring your engine can safely handle the extra power from a larger turbo or more aggressive engine tuning.

What Else You'll Need: The Installation Kit

A common mistake is overlooking the small parts needed to put everything together correctly. A new short block requires fresh gaskets, seals, and fluids for a successful installation. Our Crawford Short Block Install Kit bundles all the necessary OEM components you'll need. Trying to reuse old, worn-out parts is a recipe for leaks and other issues down the road. Investing in a complete installation kit from the start protects your new engine and ensures a clean, professional assembly, saving you potential headaches and money.

What to Expect for Labor and Assembly

Unless you’re a seasoned engine builder with a fully equipped garage, you'll need to account for professional installation costs. Labor rates vary by shop and location, but this is a significant part of your total budget. We always recommend having your engine installed by a reputable technician who specializes in Subaru performance. They have the right tools and experience to handle the job correctly, from the initial teardown to the final tuning. When you’re planning your budget, be sure to get a few quotes from trusted local shops.

Putting It All Together: Your Total Investment

Figuring out the budget for your engine build can feel like a moving target, but it doesn't have to be. The key is to understand all the pieces that contribute to the final price tag. It’s more than just the cost of the main engine block; you also have to account for the essential components that ensure it all works together perfectly. Let's break down what you can expect to invest, step by step, so you can plan your project with confidence and no surprises.

Understanding Upfront vs. Total Cost

It’s easy to focus on the price of the short block, but a successful engine build requires budgeting for the total cost. The upfront price gets you the core of your new powerhouse, but the total investment includes all the supporting parts and labor needed to get it running safely and reliably. Think of it this way: the short block is the main course, but you still need the plate, silverware, and someone to cook the meal. Planning for the complete picture from the start ensures there are no surprises and helps you build a dependable, high-performance machine without cutting corners on critical components like a proper installation kit or a professional tune.

Step 1: The Engine Short Block Price

Your journey starts with choosing the right foundation for your build. The price for our Crawford Performance built Subaru short blocks can range from under ten dollars for small hardware to over $12,000 for a complete, high-performance engine assembly. This wide spectrum exists because every build is different. Whether you're looking for a modest power increase for your daily driver or building a track-ready monster, there’s a starting point that fits your goals. Think of this as the core of your investment, with the final price depending on the power and durability you’re aiming for.

Step 2: Add Your Required Components

Once you have your short block, the next step is getting all the necessary parts for a successful installation. To get the most out of your new engine, our Short Block Install Kit is a must-have. This kit is specifically designed to support significant power enhancements and ensure everything seals up correctly. The cost of this install kit typically falls between $699.95 and $799.99, especially when we have promotions running. It’s a critical investment that protects your new short block and sets your build up for long-term reliability and performance.

Step 3: Factor in the Installation Kit

So, what exactly is in the install kit? It’s a comprehensive package that includes a full set of genuine Subaru gaskets for the engine heads, intake, exhaust, and water pump. Using high-quality, authentic gaskets is crucial for preventing leaks and ensuring your engine runs smoothly. We also include detailed instructions with the kit, making it manageable for experienced home mechanics who prefer to handle the installation themselves. We’ve taken the guesswork out of finding all the right seals so you can focus on the build itself.

Calculating Your Final Price

To get your total estimated cost, you’ll add the price of your chosen short block to the cost of the install kit. We often run sales, so it’s a good idea to sign up for our emails or follow us on social media to catch a deal. Rebuilding your engine with our install kit can often be a smarter financial move than buying a brand-new stock engine. Not only do you get a more powerful and reliable result, but you also increase the overall value of your Subaru.

Engineered for Peak Performance and Reliability

When you're investing in your Subaru, you're looking for more than just a temporary thrill. You want power you can feel, but you also need reliability that you can count on every single day. That's the core of our philosophy here at Crawford Performance. We don't believe you should have to choose between a car that's fun to drive and one that's built to last. Every component we design and build is held to an incredibly high standard, blending race-proven engineering with real-world durability. We've spent years perfecting our craft, from the materials we select to the precision of our assembly process. This isn't just about bolting on parts; it's about creating a cohesive system that works together to give you a driving experience that's both exhilarating and dependable. Whether you're building a dedicated track car, a capable overlanding rig, or a spirited daily driver, our commitment to quality ensures your engine is ready for whatever you throw at it. We build the kind of performance parts that we'd want in our own cars—and that's a standard we never compromise on. It's about giving you the confidence to push your vehicle to its limits, knowing it has a solid foundation built on decades of expertise and a passion for all things Subaru.

Comprehensive infographic showing Crawford EJ25 engine build process, from premium forged component selection through professional installation, break-in protocol, ECU tuning requirements, and ongoing performance monitoring. Features technical specifications, torque values, oil pressure readings, and maintenance schedules for high-performance Subaru engine builds.

A Closer Look at Our Build Quality

Our reputation is built right into our engines, starting with the short block. We are dedicated to producing high-quality Subaru engine components that set the industry standard. This starts with using only premium materials, like incredibly strong forged pistons and meticulously crafted engine blocks. Every piece is chosen and assembled with an obsessive attention to detail. This commitment ensures our engines are not only powerful but also exceptionally durable and long-lasting. We believe that true performance comes from a foundation of uncompromising quality, giving you an engine you can trust.

How We Engineer for More Power

We know you're here for the power, and our engines are designed to deliver. Our short blocks are engineered to support impressive horsepower levels that leave stock components in the dust. For example, our S5-I short block for the STI EJ257 can handle up to 770 HP, while our FA20 short block for the BRZ is built for 660 HP. These aren't just numbers on a page; they represent a significant increase in your vehicle's potential. This capability makes our engines a top choice for enthusiasts looking to truly maximize their Subaru STI upgrades and transform their driving experience.

Built to Withstand the Demands

Power is nothing without endurance. Our focus on high-quality materials and advanced manufacturing techniques means our engines are built to perform and to last. We understand that you want an engine that can handle aggressive driving without compromising its lifespan. By balancing the demand for power with the need for longevity, we create engines that give you the best of both worlds. Proper engine tuning services are a key part of this equation, ensuring your powerful new engine runs efficiently and reliably for years to come. We build for the long haul, so you can enjoy the ride without worry.

Proven on the Track, Ready for the Street

Whether you're hitting the apex on a racetrack or just running errands, your engine needs to be ready for anything. Our builds are engineered for exactly that kind of versatility. The same precision and strength that make our engines competitive on the track also make them incredibly reliable for daily driving. A crucial part of this is ensuring all components work together seamlessly, which is why our install kits are so important. They provide everything you need for a successful installation, ensuring your vehicle remains powerful and dependable. It’s about giving you the confidence to enjoy your Subaru WRX upgrades wherever the road takes you.

Make It Yours: Customization and Upgrades

Getting a Crawford built engine isn't just about replacing a part; it's about laying the foundation for the Subaru you've always wanted. This is where you get to shape your car's performance and personality. The choices you make—from the core engine configuration to the final tune—will define how your vehicle drives, feels, and sounds. Think of the engine as your canvas. The following components and services are the tools you'll use to create your masterpiece, whether you're building a reliable daily driver with extra punch, a weekend track warrior, or a rugged overlanding rig. Let's walk through how you can tailor your build to perfectly match your goals.

Find Your Perfect Engine Configuration

The heart of your build is the engine itself, and it all starts with the short block. We sell special Subaru built short blocks that are specifically designed for greater performance and reliability than a stock motor. This is your foundational choice. Are you aiming for a modest power increase for spirited street driving, or are you building a high-horsepower monster for the track? Your answer will guide you to the right configuration. Each of our short blocks is constructed with specific goals in mind, ensuring you get a solid, dependable core that’s ready for whatever you plan to throw at it. This decision is the most important one you'll make for your build.

Take a Look at Our Performance Packages

Our short blocks are engineered to give you more power, lower engine pressure, and a better engine vacuum when your car is idling. This is the Crawford difference. We don't just assemble parts; we create a balanced and efficient system designed to perform. To complement your new engine, you can explore our premium performance parts that are designed to work seamlessly together. This takes the guesswork out of your build, ensuring that every component, from the intake to the exhaust, contributes to a cohesive and powerful setup. By choosing parts designed to complement each other, you create a more reliable and potent engine package that delivers consistent results on the street or the track.

Don't Forget These Essential Add-Ons

Once you have your short block, you’ll need the right supporting parts to ensure a successful installation. The Crawford Short Block Install Kit is a crucial first step for anyone looking to build a much more powerful Subaru engine. This kit includes all the necessary gaskets, seals, and hardware to properly install your new short block. While the kit itself doesn't add horsepower directly, it builds a super strong engine that can safely handle much more power from other upgrades. Think of it as the necessary groundwork before you can build your dream house; it ensures your foundation is solid and ready for what’s next.

Dialing in Your Tune for Optimal Performance

All the high-performance hardware in the world won't mean much without a proper tune. This is the final, critical step that brings your entire build to life. A professional tune ensures your new engine runs safely and efficiently while unlocking its full power potential. The short block and install kit create a strong engine that can handle more power, but the tune is what actually delivers it. Our expert engine tuning services will calibrate your Subaru’s computer to work perfectly with your new components, optimizing fuel delivery, ignition timing, and boost levels. This is where all your careful planning and component choices pay off, resulting in a car that is both powerful and a pleasure to drive.

We've Got Your Back: Support and Warranty

Investing in a high-performance engine is a big decision, and we believe that support shouldn't end once your purchase is complete. We’re here to help you through every step, from the moment your engine arrives to the first time you turn the key and beyond. Our commitment to quality extends to our customer service, ensuring you have the resources and confidence you need to get the most out of your Subaru. Think of us as your dedicated pit crew, ready to offer guidance, answer questions, and make sure your build is a success. We stand by our work with a solid warranty and a team of experts who are just as passionate about your car’s performance as you are.

Typical Warranties for Engine Assemblies

When you're investing in a high-performance engine, the warranty is your safety net. It’s a clear sign that the builder stands behind their work. For our engines, your investment is protected by a comprehensive 12-month/12,000-mile warranty. This isn't just a piece of paper; it's our promise of quality and durability. We understand that building a performance Subaru is a significant undertaking, and this coverage gives you the confidence to move forward with your project. It ensures that you are protected against unforeseen issues, providing the peace of mind you need to truly enjoy the power and reliability of your new engine. This coverage, combined with our expert technical support, means we're with you for the entire journey.

Our 12-Month/12,000-Mile Warranty Explained

We have complete confidence in the quality and durability of our work, and we want you to feel that same confidence on the road or the track. That’s why all of our Crawford Performance built short blocks are backed by a 12-month or 12,000-mile warranty. This isn’t just a policy; it’s our promise to you that we stand behind every component and every minute of labor that goes into our engines. It provides peace of mind, so you can focus on enjoying the drive, knowing your investment is protected against defects in materials and workmanship.

Get Help from Our Technical Experts

You’re never on your own when you build with Crawford. Whether you’re in the middle of an installation or have a question about tuning, our expert technical support team is just a phone call or email away. We understand that a custom build can come with questions, and our knowledgeable technicians are here to provide the clear, straightforward answers you need. We can help you with everything from installation queries to advice on getting the most out of your new engine, ensuring you have the direct-line support required for a smooth and successful project.

How to Maintain Your New Engine

A powerful engine deserves the best care, especially during its critical break-in period. To ensure optimal performance and a long lifespan, it’s important to follow our recommended maintenance guidelines. Each installation kit includes 5 quarts of Motul Break-In Oil and a K&N Oil Filter, which are essential for the first 1,000 miles. This initial step is key to properly seating the components and setting your engine up for years of reliable power. Following these simple procedures helps protect your engine and ensures it delivers the consistent performance you expect from our premium parts.

Follow a Regular Oil Change Schedule

For a high-performance engine, regular oil changes are non-negotiable. Think of it as the lifeblood of your Subaru; clean, high-quality oil is essential for keeping all those precision-engineered internal components lubricated and cool under pressure. Sticking to a consistent schedule, especially after installing new performance parts, is the single best thing you can do to prevent premature wear and tear. Pushing oil changes "just a little longer" can lead to sludge buildup and thermal breakdown, which are the enemies of a healthy, powerful engine. Follow your car's recommended schedule diligently to ensure your engine remains responsive and reliable for the long haul.

Address Check Engine Lights Promptly

That little amber light on your dashboard is your engine's way of talking to you, and it's crucial to listen. When the check engine light comes on, don't ignore it or hope it goes away on its own. This warning means something is outside of its normal operating parameters, and addressing it quickly can prevent a small issue from turning into a catastrophic and expensive failure. This is especially true for a modified vehicle. A professional diagnosis can pinpoint the exact problem, whether it's a simple sensor or something that requires more attention. Prompt action protects your investment and keeps your car running safely.

Inspect Wear-and-Tear Components

Staying ahead of maintenance means being proactive. Beyond fluid changes, you should get in the habit of regularly inspecting key wear-and-tear components. Take a look at your spark plugs, engine belts, and hoses for any signs of cracking, fraying, or damage. These parts have a finite lifespan, and catching them before they fail can save you from being stranded on the side of the road. A quick visual check every few weeks is a simple habit that gives you a better understanding of your engine's health and helps you catch potential issues before they escalate, ensuring your Subaru is always ready for the next drive.

Need Help with Installation? We're Here.

We know that many of our customers are experienced mechanics who love getting their hands dirty. That’s why our kits come with detailed instructions to guide you through the process. We make it as clear as possible for you to tackle the installation yourself. However, if you hit a snag or just want to double-check something, our technical support team is ready to help. We can walk you through specific steps and provide the assistance you need to get the job done right. Our goal is to empower you to complete your build with confidence.

How Do Crawford EJ25 Engines Compare?

When you’re ready to invest in a built engine for your Subaru, you’ll find a lot of options out there. It can be tough to sort through the noise and figure out which builder truly delivers on their promises. The truth is, not all engines are created equal. The components used, the assembly process, and the philosophy behind the build all play a huge role in the final product you put in your car.

Making the right choice comes down to understanding what sets each builder apart. It’s about more than just peak horsepower numbers on a dyno sheet. You need to consider reliability, the quality of the parts, and the long-term value of your investment. We believe in transparency and want you to have all the information you need to feel confident in your decision. Let’s walk through how a Crawford engine stands out and what you can expect when you choose to build with us.

Crawford vs. The Competition

We’ve been in the Subaru performance world for a long time, and over the years, we’ve earned a reputation for building some of the best Subaru short blocks available. This isn’t just something we say; it’s a standard we’ve set through years of dedicated research, development, and track-tested results. Our focus has always been exclusively on the Subaru platform, which allows us to go deeper and refine our processes in a way that generalist shops simply can’t. We’re known in the community for our precision and our commitment to pushing the limits of the EJ25 platform.

What Gives Crawford the Performance Edge?

Anyone can chase a high horsepower number, but what happens after that initial pull on the dyno? Our philosophy has always been to balance impressive power with real-world durability. We understand that you want an engine that can perform on the track or trail but also get you home reliably. This dual focus on power and longevity is what we call the Crawford Performance advantage. We engineer our engines to handle sustained abuse without compromising their lifespan, giving you the confidence to push your car knowing your powerplant is solid.

Setting the Standard for Quality

A truly great engine starts with exceptional components. We use high-quality parts, like robust forged pistons and meticulously prepared engine blocks, to ensure every build is tough and built to last. Our process is rooted in precision; each component is measured, matched, and assembled by expert technicians who live and breathe Subaru performance. This attention to detail is our benchmark for quality. It’s the same standard we apply to our custom builds and the performance parts we develop, ensuring everything works together perfectly for optimal results.

Why It's a Smart Long-Term Investment

Investing in a built motor is a big decision, and we believe it should be a smart one. Rebuilding your engine with a Crawford short block is often more cost-effective than buying a brand-new OEM engine, and it significantly increases your car's performance and value. Think of it as an investment in your vehicle's future. You get a stronger, more capable engine backed by our 12-month/12,000-mile warranty. This combination of performance, reliability, and support provides a long-term value that cheaper, less proven alternatives simply can't match.

Ready to Buy? Your Next Steps

Getting your new engine is just the start of the journey. A little planning goes a long way in making sure your installation is smooth and your engine performs at its peak for years to come. Let’s walk through the key steps, from figuring out payment to monitoring performance after the break-in period. Proper preparation ensures you get the most out of your investment and can hit the road (or track) with confidence.

Explore Your Payment and Financing Options

A high-performance engine is a significant upgrade, and it’s smart to consider your budget. We want to make this process as straightforward as possible, which is why we offer financing plans to help make your dream build more manageable. These options can break down the total cost into more accessible monthly payments. Before you commit, take some time to review the available plans. This allows you to invest in the quality and power your Subaru deserves without straining your finances. Thinking through your payment strategy upfront is a crucial first step toward getting your new engine.

How to Plan Your Installation

Next, it’s time to decide how you’ll get the engine into your car. Are you an experienced home mechanic ready for a weekend project, or would you prefer to have a professional handle it? Our engine kits are designed to be comprehensive, including all the necessary parts to make the process seamless for you or your trusted mechanic. We recommend mapping out your installation plan in advance. This includes scheduling time in your garage or booking an appointment with a shop that specializes in engine tuning services. A clear plan helps prevent surprises and gets you back on the road faster.

Estimating Professional Installation Time

So, how long should you expect your car to be in the shop? A professional engine installation is a detailed process, and a skilled mechanic typically takes between 8 to 15 hours to complete the job. This isn't a simple swap. The process involves carefully removing your old engine, transferring essential components like the cylinder heads, intake manifold, and accessories over to your new short block, and then meticulously installing the assembled engine back into the car. This time frame ensures every bolt is torqued correctly and every connection is secure, which is critical for a reliable, high-performance build.

While any competent mechanic can perform the installation, we always recommend finding a shop that specializes in Subarus. Their familiarity with the platform can make the process more efficient and reduce the risk of common mistakes. They’ll have the right tools and experience for the job, from the initial teardown to the final, crucial step of dialing in your tune. When you're getting quotes for labor, be sure to ask about their experience with performance builds and engine tuning services to ensure your investment is in good hands.

What to Know About the Engine Break-in Process

Once your new engine is installed, the break-in period is the most critical phase for its long-term health and performance. This first 1,000 miles is when the internal components, like piston rings and cylinder walls, properly seat against each other. To make this process foolproof, our engine kits include 5 quarts of Motul Break-In Oil and a premium K&N Oil Filter. Following the break-in procedure carefully ensures your engine will run smoothly and reliably, delivering the power you expect for the long haul. It’s a small investment of time that pays off big in durability.

How to Monitor Your Engine's Performance

After the break-in is complete, you can start enjoying the full potential of your Crawford-built engine. To keep it running in top condition, it’s a good idea to monitor its performance regularly. Pay attention to how it feels and sounds. Our short blocks are engineered to deliver more power at the same boost level, run with lower engine pressure, and pull a stronger vacuum at idle. Keeping an eye on these indicators can help you spot any potential issues early. Consistent monitoring is key to maintaining the health of your engine and ensuring you get to enjoy all the performance parts working in harmony.

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Frequently Asked Questions

What really sets a Crawford built engine apart from a standard OEM one? Think of a standard engine as being designed for everyday, average use. We start there and re-engineer it for enthusiasts who demand more. The main difference is in the quality of the internal components and the precision of the assembly. We use stronger parts, like forged pistons, that are built to handle the increased stress from higher horsepower and boost. It’s not just about making more power; it’s about building an engine that can reliably sustain that power, whether you're on the track or a mountain road.

I see the price for the short block. What's a realistic total cost I should budget for? The short block is the heart of your build, but it's not the full picture. To get a realistic budget, you'll need to add the cost of our required Short Block Install Kit, which includes all the essential gaskets and seals for a proper installation. You should also factor in fluids and, most significantly, the cost of professional labor from a qualified shop. Getting a few quotes from local Subaru specialists for the installation will give you a solid idea of your total investment.

Do I absolutely need to get a professional tune after installation? Yes, a professional tune is not just recommended—it's a critical final step. Your new engine has different components and capabilities than the stock one, and your car's computer needs to be calibrated to work with them. A proper tune ensures all your new parts work together safely and efficiently, optimizing performance while protecting your engine from damage. Skipping this step is the quickest way to ruin your investment.

Can I install the engine myself, or should I hire a professional? If you are an experienced mechanic with the right tools and a deep understanding of the Subaru platform, our kits come with detailed instructions to support a DIY installation. However, for most people, we strongly recommend having the engine installed by a reputable technician who specializes in performance Subarus. It's a complex job, and professional installation protects your investment and ensures everything is done correctly from the start.

What does your 12-month/12,000-mile warranty actually cover? Our warranty is our promise to you that the engine you receive is free from defects in our materials and workmanship. It shows that we stand behind the quality of our components and the precision of our assembly process. If an issue arises that is a direct result of how we built the short block, we've got your back. This gives you the peace of mind to enjoy your car's new performance, knowing it's built on a solid, protected foundation.

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