1970 Chevy Monte Carlo LS Swap EFI Fuel Tank Kit with 400 LPH Pump
For mechanics fitting a modern LS powerplant into a classic 1970 Chevy Monte Carlo, this EFI fuel tank kit with a 400 LPH pump solves underbody clearance issues and simplifies plumbing. It houses a 400 LPH Walbro pump inside a treated steel shell, simplifying installation by eliminating external brackets and reducing potential leak points. The integrated vent filter guards against moisture and debris while the calibrated 400 LPH flow supports engines beyond 550 hp under rapid throttle shifts without pressure drop. Fitment for the A Body chassis is secured by supplied straps, gaskets and precision mounting hardware so first time installers gain reliable fuel delivery for LS swap projects.
Internal Fuel Pump Module Streamlines Underbody Fit
By housing the fuel pump and sending unit inside the tank, this kit removes the need for external mounting brackets and drastically simplifies plumbing layouts under the vehicle. Installers work with fewer seals and hose connections, cutting potential leak points and reducing return trips for adjustments. The module tucks neatly into the underbody contours of a 1970 Chevy Monte Carlo A Body chassis, avoiding common clearance conflicts found with aftermarket fixtures. Supplied gaskets, straps and precision hardware create a tight seal against vibration and road shock, while shielding critical components from debris thrown up by tires. Even technicians new to LS conversions will appreciate the clear instructions and reduced labor steps that accelerate project timelines without sacrificing reliability.
Precision Calibrated 400 LPH Pump for LS Engines Above 550 HP
The included Walbro pump delivers a sustained 400 liters per hour at high demand, ensuring steady pressure during rapid throttle changes and aggressive driving cycles. This capacity supports both naturally aspirated and supercharged engines above 550 hp without any measurable drop in flow rate, preventing lean conditions that can harm pistons or valves. Consistent fuel supply optimizes air fuel ratio control and feeds modern engine management systems with the stability needed for clean combustion. Drivers experience sharper throttle response and efficient burn across the powerband, whether cruising or launching off the line. By maintaining pressure under load, this pump safeguards against hesitation and helps extend the life of injectors and rail components.
Durable Treated Steel Tank Protects Against Corrosion
Engineered from corrosion resistant steel, the fuel tank withstands moisture, road salts and chemical exposure that would quickly degrade untreated metal designs. Its robust surface treatment forms a barrier against rust and pitting, which in turn stops scale and particles from entering fuel lines or pump inlets. Compared to plastic alternatives, steel offers superior impact resistance and temperature stability, making it ideal for both street driving and occasional track use. Engineers have subjected the assembly to extreme heat and cold cycles to confirm leak free performance over years of service. As contaminants remain out of circulation, maintenance intervals expand and system integrity holds up even in demanding conditions.
Integrated Vent Filter Safeguards Fuel Quality
A built in vent filter captures airborne dust and moisture before they can enter the tank, preserving pump operation and injector health. Positioned above the fuel level, this element remains accessible for routine inspection simply by removing the filler neck, without disturbing the entire assembly. By stopping water vapor and fine particles at the point of entry, the vent ensures that only clean, dry air mixes with stored fuel. This protection reduces the risk of clogged screens or erratic engine behavior and contributes to stable pressure under high load. Regular visual checks keep the filter performing at peak efficiency and support lasting system reliability.
Trust in MuscleRods for consistent performance and reliable installation. To match a smaller capacity fuel pump kit at 255 LPH consider our 1970 Monte Carlo EFI Fuel Tank Kit - 255 LPH Pump.