1968-1969 Chevy Chevelle A-Body EFI Fuel Tank Kit for LS and LT Engine Swaps
When installing an LS or LT engine into the A-Body chassis of a 1968-1969 Chevelle many builders hit the limits of the original fuel tank. This EFI fuel tank kit brings a 400 LPH pump integrated with the sending unit and filler neck in a sealed module that bolts directly to the factory crossmembers with no cutting or welding. Precision molded baffles manage fuel under cornering forces and braking transitions keeping the inlet submerged and maintaining a steady supply for engines producing more than 550 horsepower on both street and track applications.
Precision Mounting for 1968 and 1969 Chevelle A-body
The factory tank's shell contours and strap locations are matched exactly by this fuel module, allowing it to bolt directly to the original crossmembers without cutting or welding. That precise alignment preserves underbody clearance and protects frame rails from unintended stress during spirited driving, while also avoiding interference with exhaust components. Installers benefit from a reduction in fabrication time, as all required mounting hardware, gaskets and straps are included to complete the fitment with basic hand tools. By retaining the original chassis geometry of the Chevelle, suspension settings remain consistent and brake and fuel lines keep proper routing. The result is a fuel system upgrade that maintains the vehicle's classic profile while delivering modern injection performance.
Integrated Pump Module for Reliable Fuel Delivery
This EFI tank kit features a sealed assembly that unites the 400 LPH pump, sending unit, filler neck and vent filter into a single module, eliminating multiple leak points and minimizing assembly steps. Precision sealing surfaces and factory installed gaskets streamline underbody routing, so installers can focus on fuel line and wiring connections rather than troubleshooting unexpected leaks. The tank module aligns directly with original fuel hoses and vent tubes, sidestepping the need for custom adapters and preserving clean underside architecture. Designed for compatibility with modern LS and LT engine swaps, this American made unit combines high quality manufacturing with robust construction for demanding thermal and vibration conditions. Easy access to serviceable components further reduces downtime during maintenance or pump replacement.
Advanced Baffle System Under Extreme Driving Forces
Inside the tank, strategically molded baffles guide fuel around the inlet under hard cornering and sudden braking, keeping it submerged and preventing pressure drops that can trigger lean-condition stalls. The 400 LPH Walbro pump delivers ample flow for engines exceeding 550 horsepower, including supercharged applications, and its performance remains consistent during sustained high load events. By resisting vapor lock and maintaining a constant supply at extreme engine demands, this system supports instantaneous throttle response and accurate fuel pressure essential for modern engine management. Whether the vehicle is tackling winding road courses or logging track day laps, the internal baffle design stabilizes fuel delivery and safeguards against momentary starvation that can compromise drivability.
For applications requiring a Smaller capacity fuel pump Kit at 255 LPH, we recommend our 1968-1969 Chevelle EFI Fuel Tank Kit - 255 LPH Pump for consistent flow and a direct fit with LS and LT conversions.