390-950CFM Holley Renew Kit

The 390-950CFM Holley Renew Kit from Advanced Engine Design is specifically designed for serious engine builders and restoration enthusiasts who demand reliable carburetor performance in street and strip applications. This renewal kit effectively addresses common wear patterns in high-mileage Holley carburetors, restoring factory calibration and fuel delivery precision without the need for a complete carburetor replacement.

The kit includes precision-machined components such as jets, gaskets, seals, and metering circuits, all manufactured to original OEM tolerances. This ensures consistent fuel delivery and proper air-fuel ratio stability, which are critical for optimal engine performance. By replacing worn internal passages and calibration components, the kit helps eliminate carbon buildup and fuel seepage that can occur over years of service.

Ideal for mechanics and enthusiasts, this renewal kit is perfect for rebuilding Holley four-barrel carburetors within the 390–950 CFM range, commonly found in small-block and big-block applications. Whether you're working on a classic muscle car or a vintage hot rod, this kit provides the reliability and consistency needed for a properly tuned engine.