1970 Chevy Monte Carlo Notched EFI Fuel Tank Kit for LS Swap
If you are installing an LS power plant into a 1970 Chevy Monte Carlo A Body and facing limited underbody space the 1970 Monte Carlo EFI Fuel Tank Kit with its notched design and 255 LPH pump provides a clear solution. The shell follows factory frame rails to clear modern exhaust routing and wider tires while preserving ground clearance and the stock floorpan. Inside the steel shell a submerged 255 LPH pump assembly delivers consistent flow for engines up to 550 horsepower and a calibrated sending unit gives precise level readings under hard cornering. An inline vent filter also captures vapors before they escape improving pressure control and overall safety.
Notched Tank Shell Maximizes Underbody Clearance
The tank shell is formed from heavy gauge steel shaped precisely to follow the 1970 Monte Carlo A Body frame contours. This notched profile ensures modern exhaust tubes and wider tire setups clear the unit without trimming the floor pan. By preserving original ground clearance and reusing factory mount points, it keeps the Monte Carlo's classic underbody lines intact. The rigid steel structure resists deformation under load, protecting the tank and surrounding sheet metal during spirited runs or hauling gear. This approach avoids the need for custom fabrication or floor modifications that can weaken the chassis.
Integrated 255 LPH Pump Module for Stable Fuel Flow
At its core, the kit houses a 255 LPH Walbro pump within a sealed module that remains submerged in fuel at all times. This orientation prevents fuel foaming and cavitation, which can lead to pressure drops during hard acceleration or high rpm. A built in check valve locks fuel in the feed lines on shutdown, providing instant pressure on startup and reducing cranking time. The in tank assembly also shortens line runs and centralizes wiring, cutting down on leak points and simplifying service. With support for engines up to 550 horsepower, this pump sustains peak demand under boost or wide open throttle.
Precision Sending Unit for Consistent Fuel Level Readings
The sending unit in this kit employs a low friction float and a calibrated resistance curve to deliver reliable signals to both the factory gauge cluster and modern engine controls. Its compact design resists fuel slosh and angle changes, eliminating false readings when cornering or accelerating hard. Accurate level data helps avoid unexpected lean conditions by ensuring the engine management system knows just how much fuel remains in the tank. Sealed electrical connections and corrosion resistant materials extend service life in demanding driving environments. By minimizing float hang up and electrical noise, the module ensures steady gauge operation over years of use.
Inline Vent Filter and Complete Kit Components for Ease of Use
An inline vent filter captures moisture and airborne debris before they enter the tank, maintaining balanced internal pressure as temperatures and fuel levels vary. This simple filter also reduces stress on seals and hoses by preventing pressure spikes that can lead to vapor lock or component fatigue. The kit includes mounting straps, a filler neck, gaskets and all necessary hardware sized for the original frame rails, offering a true bolt in installation. The filler neck is crafted to replicate the original angle and seal interface, making it indistinguishable from stock equipment.
For increased flow capacity consider our 1970 Monte Carlo 400 LPH pump Tank Kit (notched) as a Larger capacity fuel pump Kit at 400 LPH.