So, you’re ready to swap that classic LS engine into your ride? That’s awesome! But before you fire up that powerful V8, you need to make sure it’s getting the fuel it needs. Choosing the right fuel pump for your LS swap can feel like navigating a maze. There are so many different types, brands, and flow rates out there, and picking the wrong one can lead to sputtering engines, poor performance, or worse, costly damage.
We get it. The confusion is real! You want your LS swap to run smoothly and reliably, and the fuel pump is a critical piece of that puzzle. But don’t worry, we’re here to cut through the noise. In this post, we’ll break down exactly what you need to know about fuel pumps for LS swaps.
By the time you finish reading, you’ll understand the key differences between fuel pump types, how to match a pump to your engine’s needs, and what common mistakes to avoid. We’ll help you find a fuel pump that delivers the right amount of fuel, keeps your LS purring, and lets you enjoy your awesome new engine without a second thought.
Our Top 5 Fuel Pump For Ls Swap Recommendations at a Glance
Top 5 Fuel Pump For Ls Swap Detailed Reviews
1. GSL392 Inline Fuel Pump & 58 PSI Fuel Filter Regulator 58 PSI LS Swap Fuel Pump EFI Conversion Fuel Filter Pressure Regulator 255LPH High Pressure External Pump 6AN Fittings 400-939 GSL392-400-939
Rating: 9.4/10
Upgrade your LS swap or EFI conversion with the GSL392 Inline Fuel Pump & 58 PSI Fuel Filter Regulator kit. This powerful combo provides a steady 58 PSI fuel pressure and a clean fuel supply, ensuring your engine runs smoothly and lasts longer. It’s designed for performance, handling the demands of turbocharging and supercharging with ease.
What We Like:
- Delivers a consistent 58 PSI (4 BAR) fuel pressure for optimal engine performance.
- Includes a 10-micron fuel filter to protect your engine from contaminants and extend its life.
- High-pressure 255 LPH fuel pump is suitable for performance and racing applications.
- Comes with 6AN adapter fittings, making it ideal for LS swap EFI conversions.
- OEM design ensures a direct fit and easy installation, saving you time and money.
- Includes necessary fittings for a complete setup.
- Backed by a 12-month warranty and lifetime technical support for peace of mind.
What Could Be Improved:
- While designed for LS swaps, users should double-check specific vehicle compatibility before purchasing.
- The product name is quite long and could be simplified for easier reference.
This kit offers a fantastic solution for anyone looking to improve their EFI system’s performance and reliability. It’s a smart investment for your vehicle’s health and power.
2. Lanotech fuel pump 73-91 Chevy GMC LS/LT Swap 450LPH AN Fitting Hanger +Sending Unit
Rating: 9.1/10
The Lanotech fuel pump is a fantastic upgrade for your 1973-1991 Chevy or GMC Square Body pickup when you’re swapping in an LS or LT engine. It’s designed to handle the higher fuel demands of these modern engines, making your swap smoother and more reliable. This kit comes with everything you need to get your fuel system ready.
What We Like:
- This fuel pump is perfect for LS or LT engine swaps in Square Body trucks.
- It comes with a 14-gauge pigtail for easy wiring, and a plug-and-play adapter harness for the EP381 pump.
- You get a submersible high-pressure rubber hose that works with both gasoline and E85 fuel.
- It lets you safely swap your engine without using tricky compression fittings.
- This pump is rated for 58psi, which is ideal for EFI LS and LT engines like the L83, L86, and LT1.
What Could Be Improved:
- The product description doesn’t mention if professional installation is recommended or required.
- More details about the specific AN fitting sizes included would be helpful for builders.
This Lanotech fuel pump kit simplifies your LS/LT swap, offering a robust and compatible solution for your Square Body. It’s a smart choice for anyone looking to power up their classic truck.
3. 58 PSI LS Swap Fuel Filter Regulator with 25FT 6AN EFI Fuel Hose & 6 AN Fittings Compatible With C5 Corvette
Rating: 9.2/10
This 58 PSI LS Swap Fuel Filter Regulator kit is a game-changer for anyone swapping an LS engine into their vehicle, especially C5 Corvettes. It gives you everything you need to set up a reliable fuel system. The kit makes sure your engine gets the right amount of fuel, which helps it run its best.
What We Like:
- It keeps your fuel pressure steady at 58 PSI. This is great for LS engines.
- The kit comes with a fuel filter regulator, 25 feet of fuel hose, and all the fittings. You don’t need to buy anything else separately.
- It’s built tough with stainless steel and a good quality hose. This means it won’t leak and will last a long time.
- Setting it up is easy, even for EFI systems. All the parts fit together nicely for a quick installation.
- It works with many different LS engines like LS1, LS2, and LS3, making it super versatile for many projects.
What Could Be Improved:
- The instructions could be a little clearer for first-time installers.
- While it’s a complete kit, some users might want more hose length options.
This kit simplifies your LS swap fuel system. It provides quality parts and makes installation much smoother.
4. Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 340LPH an Fitting Hanger +Sending Unit
Rating: 8.7/10
Dreaming of an LS or LT engine swap for your classic Chevy or GMC Square Body? The Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 340LPH an Fitting Hanger + Sending Unit is your key to unlocking that power. This kit is designed to make your engine swap smoother and more reliable. It’s perfect for getting your swapped truck running strong.
What We Like:
- It works with both LS and LT EFI engines, including L83, L86, and LT1 swaps.
- It’s rated for 58psi, which is great for these powerful engines.
- No more worries about bad wiring connections inside your fuel tank! This kit eliminates those failure-prone splices and solder joints.
- You can safely swap your engine without using tricky compression fittings.
- The kit comes with a 14-gauge pigtail and a plug-and-play adapter harness. This makes it easy to connect to your existing setup, especially if you’re using an AC Delco EP381 pump.
- It’s a direct fit for EFI LS or LT swapped Square Body trucks.
What Could Be Improved:
- While the kit includes a pigtail for the pump, you might need to adapt your vehicle’s wiring if it’s not a direct match for the included adapter.
This Lanotech fuel pump system simplifies your LS/LT swap. It provides a reliable and clean way to get fuel to your new engine.
5. OSIAS In-Tank Fuel Pump for GM All Models TBI to LSx Swap Fuel Pump + Filter + 58PSI pressure Regulator+ tank seal+strainer (LM7 LR4 LQ4 LQ9 L33) EP38
Rating: 8.7/10
Planning an engine swap? If you’re putting an LS engine into a GM truck, van, or SUV that originally had TBI, this OSIAS In-Tank Fuel Pump is a game-changer. It’s designed to make your LS swap smoother. You won’t have to worry about overloading your truck’s existing wiring. Plus, it won’t push too much pressure for the original regulators. This pump is compatible with all LS series engines, including popular ones like the LM7, LQ4, and LS1. It’s a direct replacement for the AC Delco EP381, making installation much simpler.
What We Like:
- Works with all LS engines for easy swaps.
- Doesn’t overload factory wiring.
- Provides the correct 58 PSI fuel pressure needed for LS engines.
- Direct fit for 1982-1995 GM TBI fuel pump hangers.
- Includes essential parts like a filter, regulator, seal, and strainer.
What Could Be Improved:
- Flow rate information is listed twice with slightly different numbers (160LPH and 164LPH).
This OSIAS fuel pump simplifies your LS swap by providing the right pressure and fit. It’s a solid choice for getting your project rolling.
Choosing the Right Fuel Pump for Your LS Swap
So, you’re diving into an LS swap project. That’s awesome! You’re putting a powerful GM LS engine into a new home. To make sure that engine runs smoothly, you need a reliable fuel pump. Picking the right one is super important. Let’s break down what you need to know.
Key Features to Look For
1. Flow Rate
This is how much fuel the pump can move. LS engines, especially performance ones, need a lot of fuel. Look for a pump that can handle at least 255 liters per hour (LPH) or more. Some high-performance LS engines might need 340 LPH or even higher.
2. Pressure Rating
Your LS engine needs fuel at a specific pressure. Most LS engines run at around 58 PSI (pounds per square inch). Make sure the fuel pump you choose can consistently deliver this pressure. Some pumps are adjustable, which is a nice bonus.
3. Voltage Compatibility
Most modern cars use a 12-volt electrical system. Ensure the fuel pump is designed for 12-volt power. This is usually standard, but it’s always good to double-check.
4. Type of Pump
There are a few main types. In-tank pumps are common and usually quieter. External pumps are often used for high-horsepower builds or when an in-tank option isn’t practical. For most LS swaps, an in-tank pump is a great choice.
5. Durability and Brand Reputation
You want a pump that will last. Look for pumps from well-known brands that have a good track record for LS swaps. This often means they’ve designed their pumps with these specific applications in mind.
Important Materials
Fuel pumps are built to handle gasoline and its additives. The internal components are usually made from strong, fuel-resistant materials like stainless steel or specialized plastics. The seals and O-rings are also crucial and should be made of materials like Viton, which resists fuel degradation.
Factors That Improve or Reduce Quality
Improving Quality
- High-Quality Internal Components: Better materials inside mean the pump lasts longer and works better.
- Good Filtration: A built-in or compatible fuel filter helps keep debris out, protecting the pump and engine.
- Solid Construction: A well-built pump with good sealing will prevent leaks and ensure consistent pressure.
Reducing Quality
- Cheap Materials: Using lower-quality plastics or metals can lead to early failure.
- Poor Sealing: Leaky seals can cause pressure drops and fuel loss.
- Inconsistent Performance: A pump that doesn’t maintain steady pressure is bad for your engine.
User Experience and Use Cases
User Experience
A good fuel pump means your LS swapped vehicle starts easily and runs smoothly. You won’t have sputtering or hesitations. Installation can vary. Some pumps are direct replacements for specific fuel tanks, making it easier. Others might require custom fittings or modifications.
Use Cases
- Daily Drivers: A reliable, moderately powerful pump is perfect for a car you drive every day.
- Street/Strip Cars: If you like a bit of drag racing, you’ll need a pump that can handle higher demands.
- Show Cars: Even if you don’t drive it much, a quality pump ensures your engine performs when you need it to.
Frequently Asked Questions (FAQs)
Q: What’s the most common fuel pump for an LS swap?
A: The Walbro 255 LPH is a very popular choice for many LS swaps. It’s a good balance of flow rate and affordability.
Q: Do I need a special fuel pump for a turbocharged or supercharged LS?
A: Yes. Forced induction engines need more fuel. You’ll likely need a higher flow rate pump, like a 340 LPH or even a 450 LPH pump.
Q: Can I use a stock fuel pump from a modern GM car?
A: Sometimes. If the stock pump from a car that came with an LS engine (like a Silverado or Camaro) fits your tank and meets your flow needs, it can be an option.
Q: How do I know if my fuel pump is failing?
A: Signs include hard starting, engine sputtering or hesitating, loss of power, and sometimes a whining noise from the fuel tank area.
Q: Is it better to get an in-tank or external fuel pump?
A: For most LS swaps, an in-tank pump is preferred for its quiet operation and often simpler installation. External pumps are usually for very high horsepower builds.
Q: Do I need a fuel pressure regulator with my new pump?
A: Many modern fuel pumps have built-in regulators, but it’s important to check the pump’s specifications. If it doesn’t, you’ll need an external one.
Q: How much pressure does an LS engine need?
A: Most LS engines operate at around 58 PSI. Always check the specific requirements for your LS engine model.
Q: Will a higher flow rate pump hurt my engine if I don’t need it?
A: No, not usually. As long as the pressure is regulated correctly, a pump with a higher flow rate won’t harm your engine. It just provides extra capacity for future upgrades.
Q: What are the benefits of a stainless steel fuel pump?
A: Stainless steel is very durable and resistant to corrosion from fuel. This means it will likely last longer than pumps made from other materials.
Q: Where should I buy a fuel pump for my LS swap?
A: Reputable auto parts stores, online performance parts retailers, and specialized LS swap shops are good places to look. Always buy from trusted sources to ensure you get a genuine, quality product.
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.
Hi, I’m Sean Kernan, the voice behind esteeringwheel.com.. With a passion for all things automotive, I created this platform to share my journey, insights, and expertise about cars. From the latest tech to timeless driving tips, my goal is to help fellow enthusiasts and everyday drivers navigate the fascinating world of automobiles. Welcome to my corner of the road—let’s steer toward knowledge and discovery together!