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12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - default Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
12-308 - Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module - additional Image
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Holley 1973-87 GM C/K Series Muscle Truck EFI Fuel Pump Module

1973-87 GM C/K Series

PART# 12-308

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*** In 1987 there was a change to TBI fuel injection on some of the square body trucks and this change included the addition of this baffle in the fuel tank. These pump modules will not work with baffled EFI tanks. *** Our module was designed and oriented for the passenger side fuel tank that was the default location for single tank application models. To use the same module on the driver's side tank, you will have to lengthen your fuel hoses/lines to connect to the module because of the outlet orientation.

Overview

Converting the carbureted fuel system on your truck over to EFI has never been easier! 1973-1987 GM C/K Series Muscle Truck EFI Fuel Pump module that are designed as a direct replacement for your factory pick-up and sending unit. There is no need for modifications and you will not have to replace your fuel tank unless you want to. You can even retain the factory fuel hard line, just connect the outlet of the pump module to the hard line on your vehicle with some EFI rated fuel hose and hose clamps such as the Earls Vapor Guard. Every EFI Module includes a 255 LPH fuel pump and a Holley HydraMat. The amazing HydraMat is a patent-pending fuel reservoir system designed to reduce fuel starvation issues present in hard cornering, acceleration, stopping, inclines, and low fuel conditions.

Features:

  • The in-tank fuel pump is a high-pressure 255-lph unit, capable of supporting EFI engines producing up to 550 horsepower
  • The module includes a pre-calibrated fuel-level sending unit that was designed to work with the factory fuel gauge already in your vehicle
  • Includes a Holley HydraMat with its unique internal reservoir, which keeps fuel available at the pickup while also providing protection from contaminates
  • Fuel pressure is regulated internally and preset at 58psi, eliminating the added expense of purchasing an external fuel pressure regulator
  • No return line needed. All return fuel is handled inside the tank

Specs

Application1973-87 C10 LS Swap
BrandHolley
Emission Code5
Free Flow LPH255
Fuel Sending Unit Ohms0-90 Ohms
Fuel TypeGasoline
Inlet Diameter (in)5/16"
Product TypeFuel Pump Module
Vent Size1/4"
WarrantyLimited 90 Day
Part Number12-308

Service Parts


Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

*** In 1987 there was a change to TBI fuel injection on some of the square body trucks and this change included the addition of this baffle in the fuel tank. These pump modules will not work with baffled EFI tanks. *** Our module was designed and oriented for the passenger side fuel tank that was the default location for single tank application models. To use the same module on the driver's side tank, you will have to lengthen your fuel hoses/lines to connect to the module because of the outlet orientation.

Warranty Information

Limited 90 Day: See Details

Applications

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