Surge Pump for 1984-1989 Corvette Radiator with Auto and Manual Transmission
The 1984-1989 Corvette Radiator (Auto and Manual Trans) surge pump is engineered to safeguard fuel delivery when fitting an LS or LT engine into the C4 chassis and it addresses the risk of starvation under extreme cornering and acceleration. Its dual 255lph Walbro pumps reside in a precision billet aluminum housing designed to stay submerged, maintain system pressure and eliminate vapor lock for consistent response across the rpm range. The anodized finish protects against corrosion from heat, additives and road chemicals while preserving a tidy underhood appearance. Installation requires no custom fabrication since AN 6 fittings and supplied brackets align with original frame rails and hard lines for a secure fitment in both auto and manual transmission layouts.
Precision Machined Billet Aluminum Housing
The housing is CNC milled from a solid block of billet aluminum to deliver exceptional strength under high coolant pressures. This approach eliminates welded joints that can warp or fail, ensuring long term dimensional accuracy and a perfect seal against the radiator inlet. Its rigid construction also acts as a heat spreader, helping to dissipate engine bay heat from the pump internals during sustained high load driving. By preserving precise port alignments, the unit mates cleanly with factory gaskets and hoses for a leak free installation.
Advanced Anodized Finish for Enduring Engine Bay Protection
An anodized finish forms a hard oxide layer on the aluminum surface that resists corrosion from moisture, coolant additives and road chemicals. Unlike plated or painted coatings, this bonded finish will not peel or flake under thermal cycling, so critical fluid passages and mounting bosses remain shielded against pitting and abrasion. The result is a component that maintains its factory fresh appearance through repeated cleaning and prolonged exposure to heat. This protection extends service intervals by preventing surface degradation in aggressive underhood environments.
Self Contained Dual Walbro 255lph Pumps for Consistent Delivery
Two 255 litre per hour Walbro electric pumps operate in tandem within the submerged housing to guard against fuel starvation during hard acceleration and cornering. Keeping both pumps submerged ensures constant prime even under high g forces, while their combined flow capacity sustains stable system pressure across the entire rpm range. This design also helps to eliminate vapor lock, preventing air pockets that can lead to surging or hesitation. Consistent supply supports quicker throttle response and reliable operation of LS or LT swapped powerplants in both automatic and manual transmissions.
Integrated -6 AN Fittings and Mounting Flexibility
Precision machined -6 AN ports provide a secure, leak free connection to existing hard lines without adapters or modifications. The compact footprint and supplied brackets allow installation on either the frame rail or within the stock engine bay bracket locations, minimizing custom work. Clear access to the wiring pigtail and hardware simplifies the electrical hookup, reducing overall fitment time. This flexible mounting strategy ensures a clean install that retains the chassis' original cooling circuit layout.
Count on consistent engine bay performance. For a Similar EFI Surge Tank but this is a Single Pump, see our MuscleRods EFI Surge Tank - Single Pump.