SBF EFI Intake Manifold 4150 Flange

The SBF EFI Intake Manifold 4150 Flange from HOLLEY is purpose-built for small-block Ford engines requiring modern electronic fuel injection integration with traditional carburetor-style flanges. This manifold solves a critical problem for EFI conversions: delivering sequential or batch-fire fuel injection capability while maintaining compatibility with 4150-pattern carburetors and throttle bodies. Whether you're converting a classic muscle car to EFI for reliability and driveability, or building a street engine with modern emissions and cold-start characteristics, this intake provides the bridge between legacy hardware and contemporary fuel delivery systems.

Cast from high-quality aluminum alloy, the SBF EFI Intake Manifold features optimized runner geometry designed to balance low-end torque production with mid-range responsiveness across typical street and strip applications. The 4150 flange design ensures a direct mechanical interface with both carburetors and modern throttle bodies, eliminating adapter complexity and potential vacuum leaks that plague mismatched combinations. Internal passages are engineered to promote even fuel distribution across all eight cylinders, critical for EFI tuning stability and consistent idle quality. The manifold's 17.31-pound weight keeps rotating assembly stress minimal while its compact 12.25 by 7.2 by 25.1-inch envelope fits within tight engine bay constraints common on restomod and vintage racing builds.

This manifold is ideal for engine builders, restoration shops, and performance enthusiasts tackling small-block Ford EFI conversions where OEM intake options are unavailable or prohibitively expensive. Installation requires standard intake gaskets and fasteners; compatibility extends across all small-block Ford displacements from 221 to 302 cubic inches. Tuners appreciate the manifold's flexibility with both speed-density and MAF-based EFI systems, allowing straightforward calibration without extensive engine modifications. HOLLEY's reputation for precision casting and quality control ensures consistent fitment and reliability across hundreds of installations in competitive and street environments.