Fuel Pump - Lil Bertha Reverse Rotation

The Waterman Racing Comp Fuel Pump – Lil Bertha Reverse Rotation is a high-flow, hex-driven fuel pump designed for carbureted racing engines that require reverse-rotation operation. Built for drag racing, circle track, and other high-performance motorsports applications, this pump delivers consistent fuel delivery at elevated engine speeds and operates reliably across gasoline, methanol, and E85 fuel blends—three of the most common racing fuel types.

The pump features a 0.650 gear set paired with aluminum construction and black anodized finish, offering both durability and corrosion resistance in engine bay environments. Dual 1-1/4 inch female O-ring inlets and outlets provide industry-standard fuel line connection points, simplifying installation into existing carbureted fuel systems. The in-line design minimizes restriction and pressure drop, critical factors when supplying fuel to high-displacement or supercharged engines operating at full throttle. The reverse-rotation designation indicates this pump is specifically engineered for engines where the pump shaft rotates counter-clockwise, a common configuration in many bracket racing and modified street applications.

This pump is ideal for racers and engine builders who are upgrading aging fuel delivery systems or building new carbureted race engines from the ground up. It replaces stock or inadequate mechanical pumps that cannot sustain fuel pressure and flow under sustained high-RPM operation. The multi-fuel compatibility makes it particularly valuable for teams that switch between different fuel blends depending on season, class rules, or performance tuning strategy. Whether you're running a small-block at 7,000 RPM or a big-block stroker approaching 8,000 RPM, this pump is engineered to handle the demand.

Fuel pump selection is critical to engine reliability and performance. Undersized or damaged pumps cause fuel starvation, carburetor stumble under acceleration, and—in extreme cases—complete engine failure mid-race. The Lil Bertha's reputation in the racing community reflects proven field performance. It is sold individually, allowing you to replace a worn pump or build a complete fresh fuel system on your race car.