1978-1988 Chevy G-Body EFI Fuel Tank Kit for LS Swaps
Installing an LS powerplant in your 1978-1988 Monte Carlo, Malibu or Grand Prix G-Body requires steady fuel flow under spirited acceleration and this 255 LPH EFI fuel tank kit positions the Walbro pump fully submerged in the factory tank to shed heat and prevent vapor formation. Beyond performance gains, the direct bolt in design uses stock mount points with supplied straps, gaskets and filler neck so chassis geometry and underbody clearance remain untouched. The integrated sending unit feeds precise level data through the original gauge cluster and the American made steel tank resists corrosion and vibration for lasting service even at power levels up to 550 hp.
Submerged Pump Location for Consistent Fuel Flow
This fuel tank kit positions the 255 LPH Walbro pump fully under the fuel level to maintain steady delivery even under extreme engine demand. By keeping the pump cold and free from air pockets, it avoids heat soak and vapor formation that can lead to hesitation. A fine mesh vent filter and precision flow passages ensure fuel is drawn smoothly during cornering and hard acceleration. This immersion strategy preserves pump life and delivers a stable pressure curve to the injectors. Installers benefit from preassembled internal plumbing that aligns exactly with the factory tank openings. The result is a reliable supply that supports spirited driving without unexpected lean spikes.
Engine Support up to 550 hp for LS Swaps
Rated to feed engines producing as much as 550 horsepower, this system meets the demands of both turbocharged and naturally aspirated LS builds. The 255 liter per hour capacity covers a broad tuning range while avoiding overkill at stock outputs. Maintaining the correct pump volume prevents lean conditions at high rpm, safeguarding components and ensuring consistent power delivery. Its performance window is ideal for street rods, weekend track cars, and daily driven swaps that push the limits. By matching pump output with injector size and engine timing, tuners achieve smooth throttle response without resorting to oversized modules. This calibrated design removes guesswork for builders targeting up to midrange boost levels or aggressive cam profiles.
Direct Bolt In Installation with Factory Mounting Points
This kit uses the original tank mounting locations to preserve chassis geometry and underbody clearance on 1978–88 Monte Carlo, Malibu and Grand Prix frames. All necessary straps, gaskets, filler neck and hardware are supplied to streamline installation and cut labor time. There is no need for frame alterations, tank fabrication or ground clearance compromises. Seal materials are chosen to resist repeated thermal cycles and constant exposure to pump heat. By adhering to the factory layout, installers maintain the stock fuel line routing and venting setup for safe operation. This approach lets shops complete the retrofit in a single day with minimal welding or cutting.
Precision Level Monitoring with Integrated Sending Unit
The built in sending unit employs a calibrated float arm that delivers accurate fuel level readings through the original gauge cluster. Connector housings resist corrosion from gasoline vapors and withstand constant vibration on the road or track. By retaining the factory electrical interface, this solution avoids aftermarket gauge adaptations and preserves dash authenticity. Technicians will find clean plug and play wiring that locks firmly in place to prevent signal dropout. The sending module is designed for the G-Body's tank depth and shape, ensuring the float travels freely without binding. Drivers benefit from confidence in remaining range and pump health at all times.
To upgrade to a Larger capacity fuel pump Kit at 400 LPH see our 1978-1988 Monte Carlo 400 LPH pump Tank Kit and enjoy consistent delivery under spirited acceleration.