LS and LT EFI Fuel Tank Kit for 1974-1977 Chevy Camaro and 1974-1978 Pontiac Firebird
When retrofitting an LS or LT engine into a 1974 to 1977 Camaro or 1974 to 1978 Firebird the stock fuel tank often cannot keep up with the demands of EFI and high capacity fuel pumps under boost. This kit replaces the factory reservoir with a heavy gauge steel unit tailored to F Body chassis and houses a 400 LPH pump plus a matched sending assembly for accurate gauge readings. Mounting brackets, straps, gaskets and all necessary hardware align with factory frame points and original fuel lines so no cutting or custom adapters are required. The comprehensive design prevents vapor lock and maintains steady pressure during hard acceleration and extended spirited runs.
400 LPH Walbro Pump Performance in Boosted LS and LT Engines
The 400 LPH Walbro pump at the heart of this kit is calibrated to sustain fuel flow even when a supercharger or other boost device pushes output beyond 550 hp. Its internal impeller design maintains consistent rail pressure during full-throttle acceleration, helping to eliminate lean spots that can lead to detonation. By resisting vapor lock under heat soak or prolonged track sessions, it ensures reliable restarts after spirited runs. This capacity gives engine tuners the confidence to push LS and LT powerplants to their limits without hesitation.
Seamless Integration with 1970s F Body Chassis
This fuel tank module arrives preassembled to match the original cell opening on 1974–1977 Camaro and 1974–1978 Firebird frames, so there's no need for adapters or custom brackets. Factory fuel lines mate directly to the new sending unit, preserving routing and minimizing leak paths. Mounting tabs, straps and gaskets align with stock frame points, making installation straightforward for shops and DIY enthusiasts alike. Simplified wiring and a single plug connector cut down on potential error points, ensuring accurate gauge readings right from the start.
Durable Heavy Gauge Steel Tank with Internal Baffles
Constructed from heavy gauge steel, the replacement tank offers superior resistance to road debris impact and corrosion compared to the original unit. Strategic internal baffles limit fuel slosh during cornering, hard launches and sudden braking, keeping the pump inlet submerged at all times. Critical weld joints are reinforced to withstand the heat from underbody exhaust systems and chassis vibration over years of service. The rugged build guarantees a stable fuel supply on highway cruises as well as aggressive track outings.
Comprehensive Kit that Reduces Installation Complexity
Every component needed for a trouble-free retrofit is included: pump module, sending unit, filler neck, tank straps, vent filter, gaskets and all mounting hardware. Each piece is tailored to bolt directly onto F Body chassis without modification, cutting out parts sourcing and fitment checks. A clear step by step guide walks the installer through tank removal, module installation and final leak inspection. By uniting all critical parts into one package, the kit lets builders focus on performance rather than hunting down hard-to-find pieces.
Trust MuscleRods for precise fit and lasting service; for a smaller capacity fuel pump kit at 255 LPH see our 1974-1977 Camaro / 1974-1978 Firebird EFI Fuel Tank Kit - 255 LPH Pump.