Fuel Rail Kit - LT1 Hi-Ram Intake

The Fuel Rail Kit – LT1 Hi-Ram Intake by Holley delivers precision fuel delivery to LS-based engines running high-performance Hi-Ram intake manifolds. This kit is engineered for builders and enthusiasts who demand OEM-quality fuel distribution without compromise, whether you're building a street machine, weekend racer, or full-blown competition engine. Proper fuel rail geometry ensures even cylinder-to-cylinder fuel pressure stability, critical for consistent combustion and repeatability across the RPM band.

Holley's fuel rail architecture minimizes dead-leg fuel volume, reducing turnaround time and ensuring fresh fuel reaches injectors with minimal pressure spike lag during transient throttle events. The kit's compact profile (22 inches in length) integrates cleanly under the Hi-Ram manifold without interference, while its lightweight construction at just under 3 pounds keeps parasitic mass low. Precision-ported fuel passages and quality SAE adapters allow seamless integration with modern fuel systems, delivering consistent atomization and response across idle, cruise, and full-load conditions.

This fuel rail assembly is purpose-built for LT1 and LSx powerplants fitted with Holley's Hi-Ram intake platform, making it essential for anyone stepping beyond stock fuel distribution. Carburetor and EFI builders alike rely on this kit to achieve tuning stability and eliminate fuel-related driveability issues that plague cobbled solutions. Installation pairs with any compatible EFI controller and fuel pump capable of supporting your target horsepower; professional tuning ensures optimal pressure curves and injector timing for maximum efficiency and performance.