1966-1967 Chevy II/Nova X-Body LS EFI Fuel Tank Kit with 255 LPH Pump
When preparing an LS swap into a 1966 through 1967 Chevy II or Nova X Body chassis the right fuel tank solution is essential and the EFI Fuel Tank Kit (255 LPH Pump) is engineered to deliver that reliability. It integrates a Walbro 255 liter per hour pump inside the tank shell to support up to 550 hp and comes complete with a in tank fuel pump module, fuel tank sending unit, tank straps, filler neck, vent filter, gaskets and installation hardware. By using factory underbody mounting points it preserves original body lines without floor modifications and keeps pump operation cool and quiet while providing steady pressure under sustained load. For power outputs beyond 550 hp a 400 LPH pump kit is available to address higher flow requirements.
High-Performance Fuel System Upgrade
The 1966 to 1967 Chevy II EFI Fuel Tank Kit integrates a 255 LPH Walbro in tank fuel pump that delivers a precise volume of fuel under a wide range of operating conditions. This design optimizes EFI fuel delivery for improved efficiency, better throttle response and consistent pressure at high rpm. By providing stable flow, the system reduces risk of lean spikes when the engine operates near peak output. It also leverages submerged pump cooling to lower fuel temperature and extend component life. Tailored specifically for LS engine applications, this solution supports up to 550 horsepower without compromise.
MuscleRods Mount Compatibility
Engineers partnered with MuscleRods mounts to secure accurate engine placement and maintain proper drivetrain angle. This alignment prevents undue stress on the transmission seal area and keeps the drive shaft in line with the rear axle. The correct height of the mounting surface ensures the tank sits flush with the frame rails, keeping the fuel pickup submerged at all times. By using these mounts, installers avoid trimming or shimming, leading to a more straightforward fitment process and consistent service life.
Classic Integration with Modern EFI
Designed to fit the original trunk floor contours of 1966 and 1967 Chevy II X Body models, the tank kit preserves the vehicle's classic lines while providing precise EFI control. Installation requires no floor modification because the unit uses OEM style brackets and hardware to anchor the tank assembly. A durable sealing gasket prevents fuel odor and isolates vibration, maintaining cabin comfort. The result is a period correct appearance combined with the benefits of modern fuel injection.
Supports up to 550 Horsepower
Engineers sized the pump and inlet to handle up to 550 horsepower in LS engine combinations. The high capacity design ensures adequate fuel supply during sustained wide open throttle and sudden load shifts. Integrated vent lines and a pre plumbed outlet simplify routing and reduce installation time. Technicians will find the assembly straightforward to service, with easy access to electrical connections and fuel hose connections. This tank kit delivers reliable operation for high output street and track applications.
To step up to a larger capacity fuel pump kit at 400 LPH choose our 1966-1967 Chevy II EFI Fuel Tank Kit - 400 LPH Pump.