LS and LT EFI Fuel Tank Kit for 1973-1987 GM C10/C15 and K10/K15 Trucks
Whether you are installing an LS or LT engine into a classic C10 or K15 chassis, this fuel tank kit is built to maintain steady fuel supply under demanding driving loads. The precision welded steel shell fits 1973 through 1987 GM trucks with eight foot beds, using factory gauge wells and mounting points to avoid any frame or floor alterations. A 400 LPH pump paired with an internal baffle system prevents fuel starvation during cornering or rough terrain and keeps pressure consistent for applications up to 550 horsepower. Along with a tailored filler neck and calibrated sending unit, it streamlines plumbing and wiring to let you focus on engine tuning rather than fabrication.
Steel Shell and Internal Baffle System Preserves Fuel Delivery
The tank body is formed from heavy gauge steel with uniform wall thickness to resist impacts and off-road loads. Precision welding at every seam ensures leak-free joints while the internal baffle system controls fuel motion during hard braking, cornering or rough terrain. By limiting slosh and keeping fuel around the pickup, cavitation is prevented and pump suction remains constant under extreme driving. A corrosion resistant finish protects the steel surface from moisture, salt and road debris to maintain structural integrity over time.
400 LPH Pump Module Delivers Consistent Flow Under Load
At the heart of the assembly sits a 400 LPH pump engineered for forced induction and engines pushing beyond 550 horsepower. Reinforced motor windings sustain stable voltage in high-demand scenarios, while the integrated inlet screen and pre-filter guard against debris and fluid aeration. The pump tolerates broad temperature swings without loss of output, ensuring steady fuel pressure from city streets to rugged trails. This modular design also simplifies replacement and servicing of the pump without tank removal.
Drop In Fitment Tailored for 1973 through 1987 GM Trucks
This complete fuel tank kit installs using factory gauge wells and mounting points in 1973 through 1987 C10, C15, K10 and K15 trucks with eight foot beds, eliminating any frame or floor alterations. A calibrated sending unit and custom-shaped filler neck align precisely with existing openings for simplified plumbing and wiring. Included tank straps, gaskets and hardware secure the assembly for leak-free operation the moment it is bolted into place. Builders save significant time on mock-ups and fabrication so they can focus on tuning their LS or LT engine conversion.
Integrated In-Tank Components Enhance Reliability and Serviceability
The in-tank module combines the pump, sending unit and vent filter into a single carrier engineered for exact fit and minimal leak points. An internal pre-filter guard shields the pump from sediment, reducing wear and maintaining consistent suction around the pickup. By consolidating wiring and hoses at a central location, the design cuts overall installation complexity and risk of error. Routine access to the module through the factory gauge opening further streamlines maintenance without dropping the tank.
Backed by precision engineering for LS and LT conversions this fuel tank kit delivers consistent flow under load. For a smaller capacity fuel pump Kit at 255 LPH see our 1973-1987 GM Truck EFI Fuel Tank Kit - 255 LPH Pump - 8' bed.