EFI Fuel Tank Kit for LS Swap 1970 Chevy Monte Carlo A-Body
When fitting an LS powerplant into a 1970 Chevy Monte Carlo A Body chassis, ensuring a constant fuel supply across varied driving conditions is critical, and this EFI Fuel Tank Kit with a 255 LPH pump delivers reliable flow through a submerged Walbro module and precision sending unit in a frame-matched reservoir. The steel tank aligns with factory frame rails and underbody contours so no cutting or bracket fabrication is required and suspension mounts, brake lines and chassis geometry remain untouched. A submerged pump assembly maintains low operating temperatures, prevents vapor lock during spirited acceleration and supports up to 550 horsepower without pressure dips. Retaining the original filler neck, vent filter and mounting points ensures a ready fit that preserves stock appearance and simplifies installation and maintenance.
Precision Fitment for 1970 Monte Carlo A Body Chassis
This EFI fuel tank kit is engineered to sit exactly where the original fuel reservoir did on the 1970 Chevy Monte Carlo A Body without any cutting or bracket work. By matching the factory frame rails and underbody contours, it preserves suspension mount locations and brake line routing so ground clearance and handling geometry remain factory standard. The integrated filler neck and vent filter line up with the stock opening for a seamless appearance and simplified service. Installers can secure the assembly using the supplied straps and hardware, reducing alignment time and eliminating the need for custom brackets. This direct bolt‐in design means enthusiasts can focus on the engine swap rather than chasing fitment issues.
Submerged Walbro Pump Design for Stable Pressure
At the core of this kit is a 255 LPH Walbro fuel pump that lives entirely inside the tank reservoir to ensure consistent flow up to 550 horsepower. Immersion in liquid fuel keeps pump temperature low, which extends component life and virtually eliminates vapor lock during hard acceleration or high ambient heat. The in-tank location also dampens operational noise, delivering a quieter ride with less cabin buzz. An internal bypass valve manages excess pressure to protect seals and maintain smooth delivery under sudden throttle changes. This architecture supports both spirited driving and daily use by delivering precise fuel volume when the LS engine demands it.
Rugged Construction and Leak-Free Sealing
The shell of this tank is made from corrosion-resistant steel to withstand road debris and harsh environmental conditions while resisting rust over years of use. Precision welds secure the pump module and sending unit interfaces, providing solid support against engine vibration and chassis flex. All gaskets and mounting hardware meet EFI sealing standards, creating a reliable barrier against leaks and contamination. By choosing durable materials and proven fabrication methods, this assembly holds up to temperature swings and repeated load cycles without compromise. The result is a fuel system that maintains integrity and performance mile after mile.
EFI Conversion Benefits for Efficiency and Engine Protection
Upgrading from a carburetor to this EFI tank kit brings immediate improvements in both fuel economy and engine safety. The calibrated sending unit works with the submerged pump to feed a steady stream of fuel to the rails, eliminating lean spikes that can damage pistons and valves under load. Better atomization and metering based on sensor feedback reduce overall consumption on routine drives while delivering full flow when called for. Steady pressure during sudden throttle inputs ensures crisp response and protects internal components from starvation. This system keeps an LS-powered Monte Carlo running cool, safe, and efficient throughout every driving scenario.
Count on consistent fuel delivery under varied driving demands and for a Larger capacity fuel pump Kit at 400 LPH see our 1970 Monte Carlo EFI Fuel Tank Kit - 400 LPH Pump.