So, you’ve got that awesome LS engine ready to drop into your project car, but are you scratching your head about the fuel pump? It’s like trying to find the perfect shoes for a marathon – the wrong choice can really trip you up! Getting the fuel system right is super important for your LS swap to run smoothly and powerfully.
Many people find it tricky to pick the best fuel pump. You see all sorts of numbers and types, and it’s easy to feel lost. Do you need one that fits inside the tank, or one that sits outside? What kind of flow rate is right for your engine? These questions can make your head spin, and a bad fuel pump can lead to sputtering, stalling, or even worse, damage to your new engine. That’s no fun!
But don’t worry! This post is here to clear things up. We’ll break down what you need to know about fuel pumps for LS swaps. By the end, you’ll understand the different types, how to figure out what your LS needs, and what to look for in a quality pump. Get ready to make the right choice and get your LS-powered dream machine roaring to life!
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: 9.2/10
Upgrade your LS swap or EFI conversion with the GSL392 Inline Fuel Pump & 58 PSI Fuel Filter Regulator kit. This powerful combo delivers a steady 58 PSI to your fuel rail while ensuring clean fuel with its 10-micron filter. It’s designed for high-performance needs, handling turbocharging and supercharging applications with ease. The kit includes everything you need for a direct fit, making installation a breeze.
What We Like:
- Provides a consistent 58 PSI fuel pressure for optimal engine performance.
- The 10-micron fuel filter protects your engine by delivering clean fuel.
- Designed for high-pressure applications like turbocharging and supercharging.
- Includes 6AN adapter fittings for easy connection in LS swaps.
- OEM design ensures a direct fit and simple installation.
- Comes with a 12-month warranty and lifetime technical support.
What Could Be Improved:
- Flow rate might be lower than some other high-performance pumps at extreme pressures.
- Specific fitment details for non-LS applications should be carefully checked.
This GSL392 kit is a solid choice for anyone looking to boost their vehicle’s fuel system for performance or conversion projects. It offers a great balance of power, filtration, and ease of installation.
2. Lanotech fuel pump 73-91 Chevy GMC LS/LT Swap 450LPH AN Fitting Hanger +Sending Unit
Rating: 8.7/10
Swapping an LS or LT engine into your 73-91 Chevy or GMC Square Body truck is a popular upgrade. This Lanotech fuel pump system makes that swap much easier and safer. It’s designed specifically for these trucks and their new engines, providing the high-pressure fuel delivery needed for modern EFI systems. This kit includes everything you need to get your fuel system ready for your powerful new LS or LT engine.
What We Like:
- It works great for LS or LT engine swaps in Square Body trucks.
- The included wiring makes installation simpler.
- You get a plug-and-play adapter for easy hookup.
- It’s made with fuel-safe hose that works with gasoline and E85.
- It helps you avoid using risky compression fittings.
- The system safely handles the 58psi pressure needed for LS/LT engines.
What Could Be Improved:
- The description doesn’t mention if the entire hanger assembly is made of stainless steel or another corrosion-resistant material.
- More details on the specific materials used for the sending unit components would be helpful for long-term durability questions.
This Lanotech fuel pump kit is a solid choice for anyone tackling an LS or LT swap in their classic Chevy or GMC. It simplifies the process and ensures your fuel system is up to the task.
3. Lanotech Fuel Pump 73-91 Chevy GMC LS/LT Swap 340LPH an Fitting Hanger +Sending Unit
Rating: 8.6/10
If you’re swapping an LS or LT engine into your 1973-1991 Chevy or GMC Square Body truck, the Lanotech Fuel Pump kit is a game-changer. This 340LPH fuel pump with an fitting hanger and sending unit is designed to make your swap easier and more reliable. It handles the fuel demands of modern EFI LS and LT engines, like the L83, L86, and LT1, at the required 58psi. This kit helps you avoid common problems that can happen during fuel system swaps.
What We Like:
- It makes LS/LT engine swaps into Square Body trucks much simpler.
- It gets rid of weak spots like splices and solder joints inside the fuel tank, meaning fewer worries about fuel leaks.
- You can install it without using tricky compression fittings, which is safer for your fuel system.
- It comes with a 14-gauge wire pigtail and a plug-and-play adapter harness, making installation straightforward.
- The kit is rated for 340LPH, providing plenty of fuel for your upgraded engine.
- It’s designed for EFI LS or LT swapped Square Body applications, ensuring compatibility.
What Could Be Improved:
- The instructions could be a bit clearer for beginners.
- While it’s a great kit, the price might be a bit high for some DIYers.
Overall, the Lanotech Fuel Pump kit offers a robust and reliable solution for your Square Body LS/LT swap. It simplifies the process and enhances the safety of your fuel system.
4. 58 PSI LS Swap Fuel Filter Regulator with 25FT 6AN EFI Fuel Hose & 6 AN Fittings Compatible With C5 Corvette
Rating: 8.8/10
Upgrading your C5 Corvette for an LS engine swap just got easier with this comprehensive 58 PSI LS Swap Fuel Filter Regulator Kit. This kit provides the precise fuel pressure needed for LS engines and includes everything you need for a smooth installation. It ensures your engine gets the right amount of fuel for peak performance.
What We Like:
- It keeps fuel pressure steady at 58 PSI, which is perfect for LS engines. This helps your engine run its best.
- The kit is complete. It has the fuel filter regulator, a long 25-foot fuel hose, and all the fittings you need.
- The parts are built tough. The regulator is stainless steel, and the hose is high-quality. This means no leaks and it will last a long time.
- It’s simple to install. The kit is made for fuel-injected engines, making it a quick job for your LS swap.
- It works with many LS engines like the LS1, LS2, LS3, and LS6. This makes it a good choice for lots of different projects.
What Could Be Improved:
- More detailed instructions could be helpful for beginners.
- While compatible with many LS swaps, checking specific year and model fitment is always a good idea.
This fuel filter regulator kit is a smart investment for any C5 Corvette owner tackling an LS swap. It delivers reliable performance and simplifies the fuel system setup.
5. HFP-367-F2-AN6 Quantum TBI to LSX Swap Direct Fit Fuel Pump 58PSI (LM7 LR4 LQ4 LQ9 L33) w/Fuel Pressure Regulator/Filter + Fittings
Rating: 9.0/10
Tired of fuel delivery headaches when swapping your classic GM to a powerful LSX engine? The HFP-367-F2-AN6 Quantum TBI to LSX Swap Direct Fit Fuel Pump is your solution. This pump is engineered to give your LSX engine the consistent fuel pressure it needs, 58PSI to be exact. It’s designed for popular LSX engines like the LM7, LR4, LQ4, LQ9, and L33. Plus, it comes with a fuel pressure regulator and filter, along with all the necessary fittings. This pump is a direct replacement for GM vehicles from 1982-1995 and also replaces the EP381. It’s built to handle today’s gasoline, including blends with ethanol, and it runs quietly. You can expect this fuel pump to last over 100,000 miles or 30,000 hours, giving you peace of mind.
What We Like:
- It’s a direct fit, meaning no tricky modifications are needed for installation.
- The pump is designed to work with modern gasoline, even with ethanol.
- It’s built for quiet operation, so your engine will sound cleaner.
- It comes with a lifetime warranty, showing the company’s confidence.
- It’s constructed for long-lasting performance, over 100,000 miles.
What Could Be Improved:
- The specific compatibility list for LSX engines, while good, could be even more extensive for niche applications.
This fuel pump offers a hassle-free upgrade for your LSX swap. It’s a reliable choice that simplifies your project and ensures your engine gets the fuel it needs.
Choosing the Right Fuel Pump for Your LS Swap
So, you’re tackling an LS swap! That’s awesome. Swapping an LS engine into your project car opens up a world of power and reliability. But a crucial part of that swap is the fuel pump. Getting the right one ensures your powerful LS engine gets the fuel it needs. This guide will help you pick the perfect fuel pump.
Key Features to Look For
When you’re shopping for a fuel pump for your LS swap, keep these important features in mind.
- Flow Rate: This is how much fuel the pump can deliver. LS engines are thirsty! You need a pump that can supply enough fuel, especially at higher RPMs. Look for gallons per hour (GPH) or liters per hour (LPH) ratings. A good starting point for most LS swaps is 255 GPH, but some high-performance builds might need more.
- Pressure Rating: The pump needs to maintain the correct fuel pressure for your LS engine. Most LS engines run at around 58 PSI. Make sure the pump can handle this pressure reliably.
- Voltage: Most LS swaps use a 12-volt system. Ensure the pump is designed for 12-volt operation.
- In-Tank vs. External: You have two main choices. In-tank pumps sit inside your fuel tank. They are often quieter and can run cooler. External pumps mount outside the tank. They can be easier to install in some custom setups.
- Compatibility: Double-check that the pump is compatible with your specific LS engine and the fuel system you’re using (e.g., carbureted or fuel injected).
Important Materials
The materials used in a fuel pump affect its durability and performance.
- Pump Housing: Often made from durable plastic or metal. Metal housings tend to be more robust.
- Internal Components: Look for pumps with high-quality internal parts like brushes and impellers. These are critical for longevity.
- Seals and Gaskets: Good quality rubber or Viton seals are important to prevent fuel leaks.
Factors That Improve or Reduce Quality
Several things can make a fuel pump better or worse.
- Brand Reputation: Stick with well-known brands that have a history of making quality fuel system components. They often have better quality control.
- Build Quality: Inspect the pump for clean manufacturing. Are there any rough edges or loose parts? A well-built pump will feel solid.
- Testing and Certification: Some pumps are tested to meet certain standards. This can be a good indicator of quality.
- Cheap Knock-offs: Avoid extremely cheap pumps that seem too good to be true. They often use lower-quality materials and won’t last. This can lead to engine problems.
User Experience and Use Cases
How people use and experience fuel pumps can tell you a lot.
- Ease of Installation: Some pumps are designed for easier drop-in replacement. Others might require more fabrication. Read reviews to see what others say about installation.
- Noise Level: In-tank pumps are generally quieter than external pumps. If you want a quiet ride, an in-tank option is usually better.
- Reliability: Users often report on how long a pump lasts and if it fails prematurely. Look for pumps with many positive reviews about long-term reliability.
- Performance: Does the pump deliver consistent fuel pressure under load? Enthusiasts often share their experiences with how the pump performs during hard acceleration or track use.
Frequently Asked Questions (FAQ)
Here are some common questions about fuel pumps for LS swaps.
Q: What is the most common type of fuel pump for LS swaps?
A: The most common type is an in-tank electric fuel pump. These are reliable and efficient.
Q: Do I need a high-pressure fuel pump for my LS swap?
A: Most LS engines require a pump that can deliver around 58 PSI of fuel pressure. Check your engine’s specific needs.
Q: Can I use a stock fuel pump from a donor LS vehicle?
A: Sometimes, but it’s often better to upgrade. Aftermarket pumps are usually designed for higher flow rates needed in many swaps.
Q: How do I know if my fuel pump is too small?
A: If your engine stumbles or hesitates during acceleration, or if you notice a drop in fuel pressure, your pump might be too small.
Q: What is a “255 pump”?
A: This refers to a fuel pump with a flow rate of 255 gallons per hour (GPH). It’s a popular choice for many LS swaps.
Q: Can I run E85 with my LS swap fuel pump?
A: Not all fuel pumps are compatible with E85. You need a pump specifically rated for E85 use, as it’s more corrosive.
Q: What’s the difference between a carbureted and fuel-injected LS swap fuel pump?
A: Carbureted swaps usually need a lower pressure pump (around 7 PSI), while fuel-injected LS engines require higher pressure (around 58 PSI).
Q: How important is the fuel filter?
A: Very important! A good fuel filter protects your pump and injectors from debris. Always use a quality fuel filter.
Q: Should I replace my fuel lines too?
A: It’s often a good idea. Older fuel lines might not handle the higher pressures or flow rates of an LS engine. Use lines rated for your fuel system.
Q: Where is the best place to buy a fuel pump for an LS swap?
A: Reputable automotive parts stores, online retailers specializing in performance parts, and LS swap specific vendors are good places to look.
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.
I’m the recipe developer and food photographer behind Air Fryer at Tiffany’s. I’m also a wife, mom to two adventurous little boys, registered nurse, and live in the great Midwest. Join me as I show you new ways to use your air fryer that you never knew possible.