EFI Fuel Pump Module - 75-77 Corvette

The HOLLEY EFI Fuel Pump Module for 1975–1977 Corvette (part number 12-312) is a complete in-tank electric fuel pump assembly engineered to support modern fuel injection retrofits on classic Corvettes. This 255 lph (liters per hour) module delivers the flow rate necessary to feed contemporary EFI systems while fitting within the original fuel tank envelope of third-generation Corvettes, making it the preferred choice for builders upgrading from carbureted to fuel-injected powerplants.

At 255 lph, this pump module provides ample fuel delivery for mild to moderately boosted applications without requiring external fuel system components. The in-tank configuration maintains factory aesthetic integrity while eliminating external fuel lines and associated vibration. The modular design simplifies installation for restorers and hot rodders performing EFI conversions, as the complete assembly—pump, pickup tube, and mounting bracket—installs as a single unit. Weighing 4.9 lbs, the module fits within typical fuel tank geometry without compromising tank capacity or requiring extensive fabrication work.

This module is essential for Corvette enthusiasts converting 1975–1977 models to EFI. Whether upgrading to LS engine swaps, tuned small-blocks, or modern fuel management systems, the consistent 255 lph output ensures stable fuel pressure across idle and cruise. Restorers value the bolt-in approach—no tank removal or internal modification required. The HOLLEY brand heritage in fuel system components ensures compatibility with HOLLEY EFI controllers and other industry-standard ECUs, making this module a foundation component for professional and amateur restorations alike.

In-tank fuel pumps have become the standard for EFI retrofits because they eliminate pressure drop across external lines and improve system response. This module's 255 lph capacity sits in the proven middle range—sufficient for naturally aspirated and modestly forced-induction setups without oversizing, which can cause fuel pressure instability at idle. HOLLEY's module design has been validated across thousands of classic car conversions, making it a trusted reference point for C3 Corvette restorations.