Ever dream of giving your ride a serious power boost? The legendary LS engine is the answer for many car enthusiasts looking to inject some serious muscle under the hood. But when it comes to picking the perfect LS for your project, the choices can feel overwhelming. It’s like standing in a candy store with too many delicious options – where do you even begin?
Many people get stuck trying to figure out which LS engine fits their budget, their car, and their performance goals. Do you need a beast for the drag strip, or a reliable workhorse for daily driving? The wrong choice can lead to wasted money, frustrating installation headaches, and an engine that just doesn’t feel right. You want that awesome LS rumble, but the path to getting it can seem complicated.
This post is here to clear the confusion. We’ll break down the different LS engine families, talk about what makes them special, and help you pinpoint the best LS motor for your specific swap. By the end, you’ll have a much clearer picture of which LS will make your project car roar to life.
Our Top 5 Ls Motor For Swap Recommendations at a Glance
Top 5 Ls Motor For Swap Detailed Reviews
1. LS Swap Motor Mounts Compatible with 1973-1998 Square Body / OBS Chevy GMC Truck 2WD
Rating: 8.9/10
Looking to give your classic Square Body or OBS Chevy/GMC truck a serious power upgrade? These LS Swap Motor Mounts are designed to make that LS engine conversion a reality. They provide the adjustability you need to perfectly position your new engine and transmission, whether you’re running a standard or automatic setup. Built tough with high carbon cold rolled steel, these mounts promise a stable and reliable foundation for your project.
What We Like:
- Adjustable Placement: The slotted design lets you fine-tune your engine’s position for the best fit.
- Wide Transmission Compatibility: Works with many popular transmissions like the 4L60E, TH350, and TH400.
- LS Engine Versatility: Fits a broad range of GM LS engines, from LS1 to LS9, plus Vortec truck engines.
- Specific Vehicle Fitment: Designed for 1973-1998 2WD and 4WD Chevy/GMC C/K trucks, including models like C10, Silverado, and Sierra.
- Durable Construction: Made from high carbon cold rolled steel for a strong and stable mount.
- Customer Support: The company offers replacements for any quality issues, showing they value your experience.
What Could Be Improved:
- Detailed Instructions: While installation is easier, more detailed diagrams could be helpful for first-time swappers.
- Hardware Included: It’s not explicitly stated if all necessary hardware is included; buyers might need to source some parts.
These LS swap motor mounts offer a fantastic solution for bringing modern LS power to your beloved Square Body or OBS truck. With their adjustable design and robust construction, they are a solid choice for your engine conversion project.
2. for LS Swap Motor Mounts Adapter Plates – Universal Swap Bracket Small Block LS Conversion Adjustable Fit for LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Billet Aluminum for SBC Vehicle to LS Engine
Rating: 8.6/10
Thinking about putting a powerful LS engine into your classic ride that originally had a small block Chevy? These LS Swap Motor Mounts Adapter Plates are your ticket. They make it super easy to bolt your new LS engine into your car without having to change your existing mounts. These brackets are designed to fit perfectly, almost like they came from the factory. They’re made from strong aluminum and are precisely CNC milled for accuracy.
What We Like:
- These adapter plates let you swap a modern LS engine into your vehicle using your old small block Chevy mounts.
- They are made to OEM specs, so they fit your vehicle really well.
- The design includes a special cutout to avoid grinding your existing motor mounts, making installation smoother.
- They are CNC milled from strong aluminum for a super accurate fit.
- They move the crankshaft centerline up just a little bit (.17 inches), which helps with clearance.
What Could Be Improved:
- While the fit is great, the .17-inch crankshaft centerline shift might require checking other component clearances.
- The package only includes the adapter plates and specific bolts; other necessary hardware for the full engine swap isn’t mentioned.
These adapter plates offer a straightforward solution for a popular engine swap. They are built with quality and ease of installation in mind.
3. ICT Billet SBC Vehicle to LS Engine – Motor Mount Adapter Plate – Universal Swap Bracket Small Block LS Conversion Adjustable LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Billet 551628
Rating: 9.4/10
Swapping a modern LS engine into a classic vehicle can be tricky. The ICT Billet SBC Vehicle to LS Engine Motor Mount Adapter Plate is designed to make this swap much smoother. It helps you mount a powerful LS engine where a small-block Chevy engine used to sit. This makes your project easier and more successful. These plates are built tough and fit right.
What We Like:
- These plates are made to exact OEM specifications, so they fit your vehicle perfectly.
- They are crafted from strong, aerospace-grade, USA-made 3/8″ billet aluminum.
- The adapter plates raise the crankshaft centerline by a slight .17 inches, which can be important for driveline alignment.
- This kit includes everything you need: 2 adapter plates, 8 flat head bolts, and 6 M10-1.5 flange bolts.
- They have a clean, natural aluminum finish that looks good.
What Could Be Improved:
- The plates are threaded for M10 bolts, so you must use the included hardware. You can’t just grab any M10 bolt.
- While they are universal, some minor adjustments might still be needed depending on your specific vehicle.
This ICT Billet adapter plate is a smart choice for LS engine swaps. It offers quality materials and precise fitment to help you get your project done right.
4. for LS Swap Motor Mounts Adapter Plates – LS Conversion Adjustable Universal Swap Bracket Small Block Kit for LS Engine
Rating: 8.9/10
Dreaming of dropping a powerful LS engine into your ride? These LS Swap Motor Mounts Adapter Plates make that dream a reality. Designed for LS conversions, this kit works with a wide range of LS engines, including the popular LS1, LS3, and LS2. It’s a fantastic solution if your car originally came with a small-block Chevy engine and you’re looking to upgrade. The billet aluminum construction ensures a strong and reliable connection for your new heart.
What We Like:
- These plates let you easily swap an LS engine into vehicles that originally had a small-block Chevy.
- The design fits your vehicle perfectly, matching OEM specs for a great fit.
- They subtly raise the crankshaft centerline by .17 inches, which can boost your engine’s performance.
- Made from premium, CNC-milled aluminum, these plates are super accurate and built to last.
- Installation is a breeze; no grinding is needed for a smooth, flush fit because the center opening is already cleared for SBC/BBC motor mount humps.
- You get everything you need in the box: 2 adapter plates, 8 flat head bolts, and 6 flange M10-1.5 bolts.
- The M10 threaded plates mean you can use the included hardware.
- A 180-day warranty gives you peace of mind with your purchase.
What Could Be Improved:
- While universal, some very specific or older vehicles might require minor custom adjustments not covered by the standard kit.
- The instructions, while generally clear, could benefit from more detailed diagrams for absolute beginners.
This kit offers a straightforward and high-quality solution for your LS engine swap. You can confidently tackle your project knowing you have durable parts and support.
5. IRENPORU LS Swap Motor Mount Compatible with 1973-1998 Square Body / OBS Chevy GMC Truck 2WD
Rating: 9.1/10
Ready to swap a powerful LS engine into your classic Chevy or GMC truck? The IRENPORU LS Swap Motor Mount is your key to making it happen. This kit is built for 1973-1998 Square Body and OBS trucks, whether they’re 2WD or 4WD. It helps you fit LS engines and various automatic transmissions like the 4L60E, TH350, and TH400. The adjustable design lets you move the engine forward or backward for a perfect fit.
What We Like:
- It’s adjustable, letting you move the engine 2 inches forward or 1/2 inch back. This helps avoid clearance problems.
- It works with a wide range of Chevrolet LS engines, from LS1 to LS9, and even Vortec truck engines from 1999-2013.
- The mounts are made of strong carbon steel with a powder-coated finish, making them tough and resistant to rust and weather.
- It fits many popular Chevy and GMC truck models, including C10, C/K 1500, Sierra, and Silverado.
- It supports many common automatic transmissions, simplifying your drivetrain choices.
What Could Be Improved:
- The product description doesn’t mention if installation hardware is included, which could be a concern for some buyers.
- While it lists many compatible trucks, a more visual guide or detailed diagram might help confirm fitment for specific sub-models.
This IRENPORU LS Swap Motor Mount is a solid option for anyone looking to upgrade their truck’s power. It offers great adjustability and durability for a successful LS engine swap.
Unlocking Your Project: The LS Motor Swap Buying Guide
So, you’re thinking about swapping an LS motor into your ride? That’s an awesome move! LS engines are powerful, reliable, and come in a huge variety of vehicles. This guide will help you pick the perfect LS for your project.
What to Look for: Key Features
When you’re hunting for an LS motor, keep these important features in mind:
- Engine Size (Displacement): LS motors come in different sizes, measured in liters (L). Common sizes are 4.8L, 5.3L, 5.7L (LS1), 6.0L (LQ4/LQ9), and 6.2L (LS3). Bigger engines usually mean more power.
- Horsepower and Torque: These numbers tell you how much “oomph” the engine has. More horsepower means faster acceleration. More torque means it can pull harder.
- Fuel Injection vs. Carburetor: Most modern LS engines use fuel injection, which is more efficient and easier to tune. Older swaps might use carburetors, but fuel injection is generally preferred for daily drivers.
- Accessory Drive System: This includes the alternator, power steering pump, and AC compressor. Make sure the engine you buy has the accessories you need, or that they are readily available.
- Transmission Compatibility: LS engines use specific transmissions. Make sure the engine you choose will work with the transmission you plan to use.
Important Materials
LS motors are built with strong materials.
- Aluminum Block: Many LS engines use an aluminum block. This makes them lighter than iron blocks, which is great for weight distribution in your project car.
- Iron Block: Some truck-based LS engines (like the LQ4) use an iron block. They are heavier but often more durable for heavy-duty use.
- Cylinder Heads: These are usually made of aluminum. The design of the cylinder heads greatly affects how much air and fuel the engine can breathe, impacting power.
What Makes an LS Motor Better or Worse?
Several things can affect the quality and suitability of an LS motor for your swap.
- Mileage and Condition: Just like any used engine, an LS motor’s history matters. Low mileage and good maintenance records are a big plus. Look for signs of leaks or damage.
- Donor Vehicle: Where the engine came from can tell you a lot. Truck engines (like 5.3L and 6.0L) are often very durable and can be found for less money. Performance-oriented engines (like the LS1 and LS3) come from sports cars and have more power from the factory.
- Modifications: Has the engine been modified? Some mods can increase power, but others might reduce reliability if not done correctly. Ask for details about any upgrades.
- Completeness: Does the engine come with everything you need, like the wiring harness, ECU (engine computer), and exhaust manifolds? Having a complete package saves you time and money.
User Experience and Use Cases
LS swaps are popular for a reason! They offer a fantastic upgrade in power and reliability.
- Daily Drivers: An LS swap can turn an old car into a modern, powerful, and surprisingly fuel-efficient daily driver. The reliability of LS engines means you won’t be constantly fixing it.
- Muscle Cars and Hot Rods: This is where LS swaps really shine. They provide a huge power boost to classic cars without the headaches of older engine technology.
- Trucks and Off-Road Vehicles: LS engines are tough and can handle the demands of hauling, towing, and off-roading.
- Restoration Projects: If you’re restoring a classic, an LS swap offers modern performance while keeping the classic look.
The user experience with an LS swap is generally very positive. You get a smooth-running, powerful engine that’s also relatively easy to work on. Parts are widely available, and there’s a huge online community to help you with any questions.
LS Motor Swap FAQs
Q: What is the best LS engine for a beginner swap?
A: For beginners, a 5.3L truck engine (like from a Silverado or Tahoe) is a great choice. They are plentiful, affordable, and very reliable. You can easily upgrade them later if you want more power.
Q: Do I need a special transmission for an LS swap?
A: Yes, you’ll need a transmission that is compatible with the LS engine. Popular choices include the 4L60E, 4L80E, and T56 manual transmission. Adaptor plates can sometimes allow for other transmissions.
Q: How much does an LS swap typically cost?
A: The cost varies a lot. You can spend anywhere from $3,000 to $10,000 or more. It depends on the engine you choose, the parts you need, and whether you do the work yourself.
Q: What are the biggest challenges of an LS swap?
A: Common challenges include fitting the engine and transmission into your chassis, adapting the wiring harness and ECU, and making sure your cooling and exhaust systems are set up correctly.
Q: Can I use the original wiring harness from the donor car?
A: Sometimes, but it’s often easier to get a modified or standalone wiring harness designed for swaps. This makes connecting everything much simpler.
Q: What kind of fuel system do I need for an LS swap?
A: LS engines use a returnless or return-style fuel system with a high-pressure fuel pump. You’ll need a compatible fuel tank, pump, and lines.
Q: How do I make sure my LS swap is emissions legal?
A: This can be tricky and depends on your local laws. You’ll likely need to use the original ECU and catalytic converters from the donor vehicle, and ensure all sensors are functioning correctly.
Q: Are LS engines good on gas?
A: Compared to older V8s, yes, LS engines are quite fuel-efficient, especially the 5.3L and 6.0L truck engines. With proper tuning and driving, you can get surprisingly good mileage.
Q: Where is the best place to buy an LS engine for a swap?
A: You can find LS engines at salvage yards, online marketplaces like eBay and Craigslist, and from specialized LS swap vendors who often sell complete kits.
Q: What are some common LS swap mistakes to avoid?
A: Common mistakes include not planning your budget, buying a worn-out engine, failing to check for leaks, and not having a clear plan for wiring and plumbing. Do your research!
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.