Surge Pump for 1984-1989 Corvette Radiators (Auto/Manual)
For LS or LT engine swaps into a C4 Corvette chassis maintaining consistent fuel flow under heavy cornering is essential and the Surge Pump for 1984-1989 Corvette Radiators (Auto/Manual) keeps the Walbro 255lph unit fully submerged through every turn. Mounted directly to the factory radiator this compact assembly uses billet 6061 T6 aluminum housing with an anodized finish to resist corrosion while adding minimal weight. It arrives with prewired connectors and standard AN fittings for a plug and play install that locks in steady flow across gasoline ethanol and methanol blends. With its submerged pump design the system preserves a uniform suction head and smooth throttle response during aggressive driving sessions.
Submerged Pump Design Ensuring Consistent Fuel Delivery
By placing the Walbro 255lph pump entirely below the fuel level, this system prevents any loss of suction when the Corvette is subjected to lateral forces in tight turns or under rapid acceleration. Continuous immersion maintains a uniform suction head, eliminating temporary pressure drops that can lead to hesitation or lean spikes. In a C4 chassis where fuel slosh can expose the pump inlet to air, this design locks in steady flow regardless of vehicle motion. Drivers experience predictable throttle response even during aggressive cornering, ensuring the engine remains responsive under all driving conditions.
Billet Aluminum Housing Combining Strength and Light Weight
The housing is machined from solid 6061 T6 aluminum to deliver high tensile strength without adding unnecessary mass to the front of the car. Precision machining ensures that mating surfaces and ports meet exacting standards, reducing the chance of leaks over the long term. Aluminum alloy resists deformation under repeated heat cycles and vibration, so the pump remains aligned and sealed even after extensive track use. This construction integrates seamlessly onto the factory radiator mount, preserving the Corvette's original balance and handling characteristics.
Anodized Finish Guarding Against Corrosion
An anodized layer bonds directly to the aluminum substrate, creating a dense oxide barrier that stands up to chemical attack, abrasion from road debris, and moisture intrusion. Unlike paint or powder coat, this finish will not peel or flake when exposed to fuel spills or engine heat. Maintenance crews value the hard surface for its resistance to scratches and its ability to maintain sealing surfaces in contact with AN fittings. Over years of service, the housing preserves both its function and its appearance without additional coatings or treatments.
Simplified Installation with Prewired Connectors and AN Fittings
The surge pump arrives ready to install with a dedicated wiring pigtail for the Walbro 255lph unit, removing the need for custom harness fabrication. Installers can focus on routing rather than splicing, thanks to connectors matched to the pump and secure mounting hardware that aligns with factory radiator tabs. Six AN ports provide leak free connections for inlet and outlet lines without adapters, and they accommodate gasoline, ethanol and methanol blends without material changes. This ready to install package minimizes setup time and reduces potential error during assembly, so the engine fires up reliably on the first start.
Count on reliable fuel supply under all conditions. For a similar EFI Surge Tank but this is a Dual Pump see our MuscleRods EFI Surge Tank - Dual Pumps.