Holley In-Tank Fuel Pump for Carburetor
Choosing an in-tank fuel pump for a carbureted Holley system means matching low-pressure delivery to float-bowl control, not simply fitting any high-volume module. A carburetor needs steady fuel volume at roughly regulated low pressure so the needle and seat can manage the air-fuel mixture and cold-start mixture without flooding. The pump must feed the pickup, survive tank heat, and support the choke plate and idle setting consistently. The direct answer below identifies what to verify before purchase and which condition changes the decision.
The direct answer
For a Holley carburetor, select an in-tank pump designed for low-pressure, return-style or bypass-regulated carbureted fuel delivery, not a high-pressure EFI module. The immediate condition that changes the answer is whether your tank is factory EFI or a custom carbureted tank. If the tank was originally built for electronic fuel injection, the stock module's pressure and internal regulator typically exceed safe float-bowl levels unless the assembly is modified or replaced with a compatible low-pressure pump and return path.
The practical choice is an in-tank module or retrofit hanger that supplies steady volume near carburetor pressure while maintaining a clear return line to avoid heat soak. This preserves the linkage travel and idle setting by preventing erratic fuel level changes at the needle and seat. Confirm the pump's outlet, sender orientation, and depth suit your tank, and verify whether the manufacturer rates it for carbureted use rather than assuming any low-pressure pump will control the fuel column correctly.
