LS Swap EFI Fuel Tank Kit for 1970 Chevy Monte Carlo
Fitting a modern fuel injection system into a 1970 Monte Carlo A Body often runs into space and alignment conflicts which this 1970 Monte Carlo EFI Fuel Tank Kit solves for LS swaps with its precise notched steel shell and integrated 255 LPH pump assembly. The notched contour follows the original frame geometry to clear aftermarket exhaust and wider tire setups while preserving ground clearance and rear floorpan integrity. With a calibrated sending unit for accurate level readings under hard cornering and an inline vent filter that captures vapors before they escape, the kit maintains safer tank pressure during spirited driving.
Exact Fitment for 1970 Monte Carlo A-Body Chassis
The notched tank shell is formed from heavy-gauge steel, precisely contoured to follow the 1970 Monte Carlo A-Body frame geometry. This profile clears modern exhaust routing and wider tire setups without requiring any cutting or modification to the floor pan. By reusing factory mounting points, installation becomes a true bolt in solution that preserves ground clearance and the car's classic underbody appearance. The reinforced steel construction also protects against flex under load and safeguards the structure during spirited driving or when hauling extra weight.
Integrated 255 LPH Fuel Pump Module for 550 Horsepower Engines
At the heart of the assembly lies a 255 LPH Walbro pump integrated directly into the tank module, supplying consistent flow rates required for engines producing up to 550 hp. The in-tank orientation shortens fuel lines and mounts the pump in a stable position where it remains submerged at all times, preventing dry starts and cavitation. A built-in check valve traps fuel in the feed lines after shutdown, so cranking delivers instant pressure to the rails. This consolidated module design also streamlines plumbing and wiring, reducing potential leak points and simplifying diagnostics.
Precision Sending Unit Delivering Stable Level Readings
The calibrated sending unit combines a low friction float with a finely tuned resistance curve to deliver accurate fuel level data to modern control systems. Its low profile and durable pivot mechanism resist slosh and angle changes during cornering or heavy acceleration, ensuring the ECU and gauge cluster receive steady signals. This precision helps maintain correct air-fuel ratios by preventing unexpected lean or rich conditions tied to erroneous tank level readings. Robust materials and sealed electrical connections guarantee long-term reliability in demanding driving scenarios.
Inline Vent Filter Enhancing Safety and Pressure Control
An in-line vent filter ties directly into the stock vent hose routing to trap moisture and airborne contaminants before they enter or exit the tank. By maintaining a balanced internal pressure as temperature and fuel levels fluctuate, it helps prevent vapor lock and reduces pressure spikes that can stress seals or hoses. This small component also extends the life of other fuel system parts by filtering out debris that could clog vent lines. Its discreet mounting position preserves the original appearance while adding a critical safeguard for daily driving or weekend track outings.
Count on MuscleRods for reliable fit and performance. To step up to a larger capacity fuel pump kit at 400 LPH see our 1970 Monte Carlo 400 LPH pump Tank Kit (notched).