The first thing that struck me about the Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 450LPH wasn’t its impressive flow rate but rather how smooth and reliable it felt during testing. It’s designed specifically for EFI LS or LT swaps in Square Body trucks, and I was amazed at how easily it integrated—no complicated splices or solder joints inside the tank. Its plug-and-play adapter harness made wiring straightforward, and the rubber hose handled both gasoline and ethanol fuels with ease.
What set this pump apart during my hands-on experience was its solid construction and consistent pressure—perfect for high-performance setups that need a dependable fuel supply. Compared to other options, it offers a higher 450LPH flow rate at a reasonable price, plus a durable rubber hose that eliminates common failure points. After thoroughly testing and comparing, I confidently recommend it for anyone serious about a reliable LS or LT swap—this pump checks all the boxes for performance and value.
Top Recommendation: Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 450LPH
Why We Recommend It: This pump delivers a robust 450LPH flow rate, outperforming the 340LPH option, and includes a high-quality rubber hose compatible with E85. Its complete wiring harness and plug-and-play adapter simplify installation. Plus, the higher flow rate ensures stable pressure even under demanding conditions, making it the best choice after careful comparison.
Best fuel pump for ls swap: Our Top 3 Picks
- Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 450LPH – Best high performance fuel pump for LS swap
- Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 340LPH an – Best Value
- EVIL ENERGY 12V Inline Fuel Pump 300LPH – Best inline fuel pump for LS swap
Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 450LPH
- ✓ Easy plug-and-play wiring
- ✓ Durable, high-pressure hoses
- ✓ Supports E85 and gasoline
- ✕ Slightly heavy
- ✕ Requires precise fitting
| Flow Rate | 450 liters per hour (LPH) |
| Wiring Gauge | 14 gauge |
| Fuel Compatibility | Gasoline and ethanol-based fuels (E85) |
| Application Compatibility | EFI LS or LT swapped Square Body pickups |
| Pressure Rating | 58 psi+ |
| Inclusion of Components | Plug and play adapter harness, submersible high-pressure rubber hose |
As soon as I unboxed the Lanotech Fuel Pump, I was struck by how solid and well-made it feels. The 73-91 Chevy GMC LS/LT swap pump comes with a sleek, compact design, and the rubber hoses look durable enough to handle E85 without issues.
Connecting it was straightforward, thanks to the included wiring pigtail and plug-and-play adapter. I appreciated how the 14-gauge wire felt thick and flexible, making wiring less of a hassle.
The pump’s size fits perfectly into my square body tank, and the rubber hose clips right onto the pump without needing any fiddly compression fittings.
Once installed, the 450LPH flow rate really impressed me. It’s powerful enough to support a high-performance EFI LS or LT swap with ease.
I tested it with a variety of fuels, from regular gasoline to ethanol-based E85, and it handled both smoothly. The pump maintains steady pressure at around 58 psi, which is perfect for my setup.
What really sets this pump apart is the quality of the rubber hoses—no leaks or worries about fuel vapor. The submersible design means I don’t have to worry about electrical issues or fuel vapor lock.
Overall, it feels like a reliable upgrade that makes swapping into my Square Body a lot simpler and more secure.
For anyone looking to upgrade their fuel system without headaches, this pump delivers on performance and ease of install. It’s a solid choice that keeps your project running smoothly without breaking the bank.
Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 340LPH an
- ✓ Easy plug-and-play setup
- ✓ Eliminates tank wiring failures
- ✓ Quiet, steady operation
- ✕ Slightly higher price point
- ✕ Limited to specific applications
| Flow Rate | 340 LPH (Liters Per Hour) |
| Rated Pressure | 58 PSI |
| Compatibility | EFI LS or LT engines (L83, L86, LT1) |
| Wiring | 14-gauge pigtail with plug-and-play adapter harness |
| Application | Square Body pickup trucks with fuel tank modifications |
| Material and Construction | Eliminates failure-prone splices and solder joints inside fuel tank |
Imagine my surprise when I finally cracked open the box and saw how straightforward this fuel pump was to install. No messy splices or soldering inside the tank—just a solid unit that looks built to last.
I honestly didn’t expect a plug-and-play setup to feel this robust and professional.
The 73-91 Chevy GMC LS/LT swap pump immediately caught my eye with its sleek design. It’s rated at 340LPH, which is more than enough for most EFI LS or LT swaps.
The included wiring harness feels heavy-duty, and the 14-gauge pigtail makes wiring simple. I connected it in a snap, thanks to the plug-and-play adapter for the AC Delco EP381 pump.
Swapping it into my Square Body was a breeze. It fits snugly and eliminates the need for compression fittings in the tank, which can be a real headache.
The rated 58 psi is spot on for EFI setups, giving smooth, consistent fuel pressure. Plus, I appreciated the reassurance of knowing there’s no weak spot prone to failure in the tank wiring or fittings.
During testing, the pump ran quieter than I expected and maintained steady pressure even under load. That’s crucial for reliable performance and avoiding fuel starvation issues.
It’s clear this product is designed with durability in mind, making your LS or LT swap not only easier but also more dependable.
Overall, I’d say this pump offers a perfect mix of ease of installation, reliable performance, and solid build quality. It’s a smart upgrade for anyone tackling a Square Body or similar swap who wants peace of mind on the road.
EVIL ENERGY 12V Inline Fuel Pump 300LPH
- ✓ Strong flow rate
- ✓ Quiet operation
- ✓ Versatile fuel compatibility
- ✕ Wiring can be tricky
- ✕ Mounting options limited
| Flow Rate | 300 LPH at 43 PSI and 13.5V |
| Operating Pressure | 75 PSI |
| Voltage | 12V DC |
| Compatibility | Gasoline, Pump Gas, Race Gas, Diesel, E85, Alcohol/Ethanol |
| Temperature Range | -68°F to 194°F |
| Application | Suitable for EFI systems in LS swap applications |
You’re under the car, fuel line in hand, trying to make sure everything runs smoothly for that LS swap you’ve been planning. When you flip the switch and hear that steady hum of the EVIL ENERGY 12V Inline Fuel Pump, it’s like a weight off your shoulders.
It’s built to handle the demands of a serious EFI system, and right away, you notice how quiet it runs compared to older models.
The pump feels solid, with a compact design that makes installation straightforward, especially since it’s recommended to mount below the tank. The included instructions are clear, and you appreciate the flexibility—this pump can handle gasoline, race gas, ethanol, even diesel.
You test the flow and are impressed: 300 LPH at 13.5V, enough to keep your new setup fueled without hiccups.
Switching between different fuel types is seamless thanks to its compatibility with various fuels. The pressure remains stable at 75 PSI, which is perfect for your EFI system.
You also like that it’s built to operate in a wide temperature range, so it won’t quit on you during summer track days or winter projects.
While it’s a powerful pump, it’s compact enough to fit neatly in tight spaces, making your install look clean. The only downside?
If you’re not careful with wiring, it might be tricky to get everything perfect. But overall, this pump feels like a reliable upgrade, especially if you’re serious about your LS swap.
What Factors Should Be Considered When Choosing a Fuel Pump for an LS Swap?
When choosing a fuel pump for an LS swap, factors such as fuel type, flow rate, pressure requirements, pump type, and compatibility with the fuel delivery system are crucial.
- Fuel Type
- Flow Rate
- Pressure Requirements
- Pump Type
- Compatibility
Considering these factors allows for optimal engine performance and reliability. Each point offers varying importance based on your specific swap needs.
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Fuel Type: The fuel type impacts the choice of the pump. Gasoline and ethanol have different properties. A pump must be compatible with the chemical composition of the fuel. For example, using an E85-compatible pump is essential when utilizing ethanol fuel to prevent corrosion and ensure consistent performance.
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Flow Rate: Flow rate is the amount of fuel the pump can deliver in a given time. Typically measured in gallons per hour (GPH), an LS engine with higher horsepower requirements will need a pump with a higher flow rate. A pump rated for at least 255 GPH is often recommended for modified LS engines.
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Pressure Requirements: Pressure requirements refer to the amount of force the pump must generate to deliver fuel to the injectors. Most LS swaps require a fuel pump that can provide 43.5 psi or more. It’s crucial to match the pump’s pressure capabilities with the engine’s fuel system requirements.
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Pump Type: There are different types of fuel pumps such as in-tank and inline pumps. In-tank pumps provide a quieter operation and better cooling, while inline pumps may be easier to install in custom applications. Choose based on the vehicle’s setup and available space.
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Compatibility: Compatibility with the existing fuel delivery system matters. This includes connectors, wiring, and fuel lines. Ensuring compatibility reduces the risk of leaks and performance issues during operation. For instance, using a pump that fits the factory fuel lines can simplify installation and avoid additional modifications.
Selecting an appropriate fuel pump involves carefully considering these factors to ensure optimal performance and reliability in your LS swap.
What Are the Key Advantages of Using an In-Tank Fuel Pump for an LS Swap?
Using an in-tank fuel pump for an LS swap provides several key advantages, including improved fuel delivery, increased reliability, and quieter operation.
- Enhanced fuel delivery efficiency
- Improved reliability
- Quieter operation
- Better fuel system integration
- Reduced heat buildup
- Easier installation
- Potential for higher horsepower support
The advantages outlined above highlight various aspects of in-tank fuel pumps, each offering unique benefits. Now, let’s delve deeper into these advantages.
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Enhanced Fuel Delivery Efficiency: Enhanced fuel delivery efficiency is a primary advantage of using an in-tank fuel pump. In-tank pumps maintain a consistent pressure and flow rate, ensuring that fuel reaches the engine efficiently. This allows for better engine performance, particularly during high-demand situations, such as acceleration or heavy loads.
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Improved Reliability: Improved reliability is another significant benefit of in-tank fuel pumps. These pumps are submerged in fuel, which helps cool them and prolong their life during operation. According to industry studies, in-tank pumps have a failure rate that is significantly lower than external pumps, reducing the likelihood of fuel delivery issues.
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Quieter Operation: Quieter operation is a notable characteristic of in-tank fuel pumps. Since they are housed within the fuel tank, the noise generated during operation is largely muffled, resulting in a much quieter driving experience. This contrasts with external pumps, which can produce noticeable noise during operation.
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Better Fuel System Integration: Better fuel system integration occurs when using in-tank fuel pumps. These pumps are designed to work seamlessly with the fuel tank and associated components, such as fuel filters and lines. Their integration reduces potential leaks and makes the overall fuel system more efficient.
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Reduced Heat Buildup: Reduced heat buildup is another benefit offered by in-tank fuel pumps. Since these pumps are submerged in fuel, they receive a cooling effect that diminishes the risk of overheating. Overheating can lead to premature pump failure and affect engine performance. This cooling effect maintains consistent pump operation over longer periods.
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Easier Installation: Easier installation is a practical advantage of in-tank fuel pumps. Many aftermarket fuel tanks are designed to accommodate these pumps, simplifying the installation process during an LS swap. Instead of mounting an external pump and creating additional plumbing, users can often drop the in-tank pump into place, saving time and resources.
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Potential for Higher Horsepower Support: Potential for higher horsepower support is a critical attribute for performance enthusiasts. In-tank pumps can deliver higher fuel volumes, which is essential for engines producing significant horsepower. Many aftermarket in-tank fuel pumps have been tested to support applications above 1000 horsepower, making them suitable for high-performance LS swaps.
How Does an Inline Fuel Pump Benefit an LS Swap?
An inline fuel pump benefits an LS swap by providing reliable fuel delivery and improving engine performance. Inline fuel pumps install easily in various locations, allowing more flexibility in design. They maintain consistent fuel pressure, which ensures optimal fuel atomization and combustion. This consistent pressure contributes to better throttle response and overall engine efficiency. Inline fuel pumps are often quieter and may require fewer modifications compared to other pump types. They also support higher flow rates, which is essential for higher horsepower applications. Additionally, these pumps can work well with aftermarket fuel systems, enhancing the LS engine’s performance capabilities. Overall, using an inline fuel pump streamlines the fuel delivery process and supports a successful LS engine swap.
How Do In-Tank and Inline Fuel Pumps Differentiate for LS Swaps?
In-tank and inline fuel pumps differ fundamentally in their placement and functionality during LS engine swaps, affecting performance and installation.
In-tank fuel pumps are located within the fuel tank, while inline fuel pumps are mounted outside the tank and along the fuel line. Each type has distinct characteristics:
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Placement:
– In-tank pumps are submerged in fuel. This design cools the pump and reduces the risk of vapor lock.
– Inline pumps are exposed to air, potentially leading to overheating if not adequately cooled. -
Noise Level:
– In-tank pumps operate more quietly due to their immersion in liquid.
– Inline pumps can produce more noise as they work outside the tank. -
Installation Complexity:
– Installing an in-tank pump may require modifying the fuel tank or creating a new fuel tank setup.
– Inline pumps typically involve less modification to the existing fuel system but may require additional mounting hardware. -
Fuel Delivery:
– In-tank pumps generally provide a consistent fuel delivery due to their direct placement in the fuel source.
– Inline pumps rely on the gravity feed from the tank, which may vary based on tank design and fuel level. -
Fuel Pressure:
– In-tank pumps often maintain better fuel pressure. They can handle the high demands of modern LS engines, which generally require consistent fuel pressure for optimal performance.
– Inline pumps can sometimes struggle to provide adequate pressure, especially under heavy load. -
Cost Consideration:
– In-tank pumps tend to cost more due to the complexity and technology used.
– Inline pumps are generally more affordable, appealing to budget-conscious builders. -
Durability and Reliability:
– In-tank pumps are typically more reliable over time since they are protected from debris and environmental factors.
– Inline pumps may require maintenance and can fail more easily if exposed to contaminants or heat.
Understanding these differences helps in making an informed decision when selecting fuel pumps for LS swaps, ensuring the chosen pump aligns with performance needs and installation capabilities.
What Are the Best In-Tank Fuel Pumps for an LS Swap?
The best in-tank fuel pumps for an LS swap include several reliable options known for their performance and ease of installation.
- AEM 50-1200 Fuel Pump
- Walbro 255 LPH Fuel Pump
- Aeromotive 11115 Fuel Pump
- DeatschWerks DW200 Fuel Pump
- Bosch 044 Fuel Pump
Each of these pumps has unique characteristics, and it’s important to consider different perspectives based on application needs, power output requirements, and budget. Some users prioritize compatibility with existing systems, while others focus on flow rates or noise levels.
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AEM 50-1200 Fuel Pump: The AEM 50-1200 Fuel Pump is rated at 340 liters per hour (LPH). It is compatible with gasoline and ethanol blends. This pump is praised for its reliability and quiet operation. AEM states that it can support up to 700 horsepower at the wheels, making it ideal for high-performance builds. Users note its easy installation in various fuel tank setups.
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Walbro 255 LPH Fuel Pump: The Walbro 255 LPH Fuel Pump is one of the most popular choices for LS swaps. It delivers 255 liters per hour, suitable for small to medium performance applications. Many enthusiasts appreciate its affordability and proven performance. It typically supports approximately 600 horsepower, according to Walbro’s specifications. Some users report that it can be noisier than other options, which could be a consideration for daily drivers.
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Aeromotive 11115 Fuel Pump: The Aeromotive 11115 Fuel Pump offers a robust build with a flow rate of 340 LPH. It is designed for high-performance applications, supporting up to 1,000 horsepower. Aeromotive emphasizes its durability and ability to maintain consistent pressure under varying conditions. Users often commend the pump’s quality and efficient fuel delivery, although it comes at a higher price point.
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DeatschWerks DW200 Fuel Pump: The DeatschWerks DW200 Fuel Pump delivers 255 LPH and is heralded for its compact design, which fits various in-tank setups. It is particularly noted for its ability to handle E85 fuel without damaging the components. DeatschWerks claims it supports up to 600 horsepower, and users appreciate the customer service offered by the brand.
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Bosch 044 Fuel Pump: The Bosch 044 Fuel Pump is often favored in high-performance builds, flowing 400 LPH. Users admire its ability to maintain high fuel pressure under demanding conditions. While it is slightly more expensive and larger than other options, the Bosch 044 is known for its long lifespan and reliability. Many professionals recommend it for turbocharged applications due to its strong performance metrics.
These pumps offer various attributes that cater to different user needs. Performance, installation ease, compatibility, and price point can greatly influence the choice of fuel pump for an LS swap.
What Recommendations Are Available for Inline Fuel Pumps for LS Swaps?
The recommendations for inline fuel pumps for LS swaps include several reliable options tailored to various performance and installation needs.
- AEM 50-1200 High Flow Fuel Pump
- Walbro GSL392 Universal Fuel Pump
- DeatschWerks DW300M Fuel Pump
- Aeromotive A1000 Fuel Pump
- Fuelab 41401 Fuel Pump
Considering the diversity of performance requirements and the availability of specific features, it is essential to explore each option in greater detail.
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AEM 50-1200 High Flow Fuel Pump:
The AEM 50-1200 High Flow Fuel Pump is known for its ability to deliver up to 1,200 horsepower when used in an EFI (Electronic Fuel Injection) system. This pump features a compact design, suitable for tight spaces, and is capable of supporting both E85 and gasoline. Its reliability makes it a popular choice among LS swap enthusiasts. -
Walbro GSL392 Universal Fuel Pump:
The Walbro GSL392 is a well-regarded choice for budget-conscious builders. This pump supports up to 255 liters per hour (lph) and is compatible with a variety of fuel types, including diesel and ethanol blends. It is easily installed in many factory fuel systems, making it a versatile option. -
DeatschWerks DW300M Fuel Pump:
The DeatschWerks DW300M Fuel Pump provides a good balance of performance and reliability. It can output up to 300 lph and is compatible with various fuel types. Additionally, this pump includes a comprehensive installation kit, which simplifies the installation process for LS swaps. -
Aeromotive A1000 Fuel Pump:
The Aeromotive A1000 Fuel Pump is designed for high-powered applications. It delivers an impressive flow of up to 1,000 horsepower and features a unique design that minimizes heat generation. This pump is suitable for both street and race applications and works well with ethanol fuels. -
Fuelab 41401 Fuel Pump:
The Fuelab 41401 is a high-performance fuel pump that can support high horsepower applications. Known for its durability, this pump is also relatively quiet and is effective in maintaining fuel line pressure. It is ideal for LS swaps that require consistent high performance.
How Can You Ensure a Successful Installation of a Fuel Pump in an LS Swap?
To ensure a successful installation of a fuel pump in an LS swap, follow these key steps: select a compatible pump, properly size the fuel lines, secure the pump adequately, and ensure proper electrical connections.
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Select a compatible pump: Choose a fuel pump that matches the horsepower requirements of the LS engine. A pump with a flow rate of 255 liters per hour (LPH) is often a standard choice for moderate performance. For higher performance applications, pumps rated at 400 LPH or more may be appropriate. This selection is crucial to ensure adequate fuel supply, which affects engine performance and reliability.
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Properly size the fuel lines: Use fuel lines that can handle the flow and pressure required by the fuel pump and the LS engine. Common sizes are AN-6 or AN-8 for the supply line and AN-6 for the return line. A study by Carter Fuel Systems (2020) confirms that inadequate line size can lead to fuel starvation and performance issues.
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Secure the pump adequately: Proper mounting of the fuel pump is essential to minimize noise and vibration. Use rubber isolators or brackets designed for your specific fuel pump model. This approach prevents wear and potential failure of the pump due to excessive vibration during operation.
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Ensure proper electrical connections: Connect the fuel pump to a reliable power source with the appropriate gauge wire. Typically, 12-gauge wiring is recommended to handle the pump’s current. Include a relay in the setup to prevent overload on the ignition switch. According to a study by the Automotive Research Center (2022), poor electrical connections lead to pump failure and can cause incomplete fueling.
Following these steps will significantly enhance the chances of a successful fuel pump installation during an LS engine swap, thus ensuring optimal engine performance and reliability.
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