The best LS swap in-tank fuel pump depends on your vehicle’s tank and fuel demand. For 1973–1991 Chevy and GMC trucks, the Lanotech 450LPH hanger is the most directly tailored option. For 1982–1995 GM TBI vehicles, the Lanotech 58 PSI pump is designed as a drop-in replacement. The Aeromotive 340 LPH pump is a high-flow pump for compatible hangers, while the EVIL ENERGY pump and line kit are external or plumbing components—not complete in-tank kits.
| Product | Best suited for | Type |
|---|---|---|
| Lanotech 450LPH Hanger | 1973–1991 Chevy/GMC trucks | In-tank hanger and pump |
| Lanotech 58 PSI Pump | 1982–1995 GM TBI vehicles | Replacement in-tank pump |
| Aeromotive 340 LPH | High-flow builds with a compatible hanger | In-tank pump |
| EVIL ENERGY 300LPH System | Builds using an external pump | External pump and regulator |
| EVIL ENERGY 6AN Line Kit | EFI plumbing for an LS swap | Fuel line and regulator |
Lanotech 450LPH Square-Body Hanger
Best for: LS or LT swaps in 1973–1991 Chevy and GMC C/K trucks, Suburbans, and Blazers. This is the most vehicle-specific option in the list: the listing identifies a hanger and sending unit designed for these factory tanks and says no tank modifications are required.
The included electric pump is rated at 450 liters per hour. The listed pump and rubber components are compatible with gasoline, E85, and other ethanol-blended fuels, making this a relevant choice for flex-fuel plans or high-flow builds.
Limitation: Its stated direct fit applies to the specified 1973–1991 truck and SUV applications. Confirm the exact vehicle and tank configuration before ordering; do not assume it fits other GM tanks.
Lanotech 58 PSI GM TBI Pump
Best for: An LS swap retaining a 1982–1995 GM TBI vehicle’s original pump hanger. The product is described as a drop-in replacement requiring no cutting, splicing, or hanger modification, and it includes a pump, filter, strainer, seals, and clamps.
Its listed pressure is 58 PSI, and its flow ratings are 164 LPH at 45 PSI and 145 LPH at 60 PSI. The manufacturer states support for up to 500 horsepower in naturally aspirated applications. It can be used with a C5 Corvette regulator/filter or a rail-mounted regulator, according to the listing.
Limitation: The horsepower claim is specifically for naturally aspirated applications. Verify pressure regulation and fuel-system layout for your engine setup.
Aeromotive 340 LPH In-Tank Pump
Best for: Builders who need a higher-flow pump and already have, or are selecting, a compatible in-tank hanger. Aeromotive lists output above 340 LPH at 40 PSI and describes the 12V pump for EFI and carbureted setups, including naturally aspirated, turbocharged, and supercharged engines.
The compact 39 mm body is designed for select hanger assemblies. This makes it a pump component rather than a complete vehicle-specific hanger kit. It may suit a custom build where the installer can confirm the pump, hanger, wiring, and plumbing match.
Limitation: Fitment is application-specific. The listing directs buyers to check Aeromotive’s application catalog, so confirm hanger compatibility rather than assuming a direct fit.
EVIL ENERGY 300LPH External Pump System
Best for: An LS EFI conversion designed around an external pump and separate fuel plumbing. The system combines a 300 LPH inline pump with a regulator that maintains 58 PSI and a 10-micron filter. The listing names 4.8L, 5.3L, and 6.0L LS engines and 1999–2014 Chevy V8 applications.
Choose this if you want the listed external-pump layout and a bundled filter-regulator. The pump is specified for 12V EFI systems and a maximum operating pressure of 75 PSI.
Limitation: This is not an in-tank pump or hanger assembly. Avoid it if your priority is retaining a factory in-tank setup without adding an external pump.
EVIL ENERGY 6AN LS Swap Line Kit
Best for: Builders who need EFI fuel plumbing and a 58 PSI regulator for an LS swap. The kit includes 20 feet of 6AN braided hose and a regulator with an internal bypass and 10-micron filter. Its listed maximum working pressure is 750 PSI.
This can complement a separately selected pump and tank arrangement. The listing says the hose is compatible with gasoline and diesel fuel and specifies a temperature range of -22°F to 248°F.
Limitation: This is a fuel line and regulator kit, not a fuel pump. The listing excludes E85 and ethanol, so it is not the right line-kit choice for an ethanol-fuel setup.
Buying Guide
Do you need a complete hanger or just a pump?
A hanger combines the in-tank pump with the assembly that mounts in the tank; a replacement pump alone generally requires a compatible hanger. The Lanotech square-body product is listed as a hanger and sending unit. The Aeromotive product is a pump intended for select hanger assemblies. Check the product description and your existing hardware before choosing.
How should you match the pump to your vehicle?
Start with the vehicle’s year, model, and tank. The two Lanotech products target distinct ranges: 1973–1991 Chevy/GMC trucks and 1982–1995 GM TBI vehicles. Do not treat those fitments as interchangeable. For other vehicles, verify tank opening, hanger dimensions, electrical connections, and sending-unit requirements with the manufacturer or installer.
What pressure and flow should you compare?
Match the pump’s pressure and flow to the engine, regulator, and fuel-system design. The listed products range from the Lanotech pump’s 58 PSI specification to the Aeromotive pump’s output above 340 LPH at 40 PSI. Flow figures at different pressures are not directly interchangeable. Confirm the required operating pressure and fuel demand for your specific build.
Will the system use gasoline or ethanol blends?
Fuel compatibility varies by component. The square-body hanger listing specifies gasoline and E85 compatibility, while the EVIL ENERGY line kit explicitly excludes E85 and ethanol. Check every part that contacts fuel—including hose, seals, pump, and regulator—before using an ethanol blend.
Frequently Asked Questions
What fuel pressure does an LS swap typically need?
The products in this selection identify 58 PSI as the target for LS applications. Confirm the requirement for your engine and regulator configuration before installation.
Is an external fuel pump the same as an in-tank pump?
No. An external pump mounts outside the tank, while an in-tank pump sits inside it. The EVIL ENERGY 300LPH product is external; the Lanotech and Aeromotive options are intended for in-tank applications.
Can I use a 450 LPH pump with a stock LS engine?
Flow capacity alone does not determine suitability. Confirm the pump’s fitment, pressure regulation, and compatibility with the engine and complete fuel system before buying.
Does the Aeromotive pump include a hanger?
The supplied product details describe a 39 mm pump designed for select hanger assemblies, not a complete hanger. Verify what is included and confirm your hanger fitment.