105mm EFI Hi Ram Intake Manifold SBF 351W

The 105mm EFI Hi Ram Intake Manifold SBF 351W from HOLLEY is purpose-built for serious small-block Ford enthusiasts seeking maximum airflow and EFI compatibility in a high-performance street or competition engine. This intake manifold addresses a critical bottleneck in forced-induction and naturally aspirated 351W builds: delivering fuel and air charge efficiently to all eight cylinders while maintaining proper plenum velocity and fuel atomization. Whether you're building a hot street engine, a weekend bracket racer, or upgrading an existing 351W platform, this Holley manifold provides the flow characteristics and electronic fuel injection integration needed to unlock genuine horsepower gains without sacrificing drivability.

The 105mm bore design is engineered to optimize velocity across the rpm range, ensuring consistent fuel distribution and combustion stability from idle through peak power. The Hi Ram profile increases plenum volume strategically, promoting stronger midrange torque and top-end power while the EFI-compatible mounting and port design integrate seamlessly with modern fuel injection systems, eliminating carburetor limitations and enabling precise cylinder-to-cylinder fueling control. Cast from durable aluminum alloy, this manifold combines lightweight construction with thermal stability, reducing underhood heat while maintaining structural integrity under boost or high cylinder pressures. The 16×16×30-inch footprint is engineered to fit standard 351W engine bays without clearance compromises, and at 38.74 lbs, the weight penalty is minimal compared to iron alternatives.

This intake manifold is ideal for 351W engine builders who demand both bolt-on convenience and measurable performance improvement without custom fabrication. Compatibility extends across naturally aspirated, supercharged, and turbocharged 351W applications, making it a versatile choice for street machines, restomod projects, and dedicated race engines alike. Installation requires standard hand tools and basic mechanical competency; ensure your fuel injector sizing and ECU tuning match the manifold's flow characteristics for optimal results. Pair this with quality fuel injectors, a capable fuel system, and professional tuning for best results—the manifold alone provides the foundation; supporting systems deliver the promise.