BBC EFI R/P Intake Manifold w/4150 Flange

The BBC EFI R/P Intake Manifold w/4150 Flange from HOLLEY is purpose-built for big-block Chevy engines running modern electronic fuel injection systems. This aluminum manifold bridges the gap between classic BBC performance and contemporary EFI technology, allowing you to upgrade aging carbureted engines or retrofit existing builds with reliable fuel delivery and tuning flexibility. Whether you're building a street machine, restomod, or high-performance crate engine combo, this manifold delivers the intake velocity and distribution needed for consistent power across the RPM range.

The 4150 flange mounting pattern ensures compatibility with a vast array of EFI throttle bodies and fuel injection systems, making this a versatile platform for custom tuning and engine management solutions. The runner design promotes efficient air and fuel mixing while the cast aluminum construction provides strength without excessive weight, critical for maintaining proper weight distribution in high-output applications. The R/P designation indicates a reverse-plenum configuration that optimizes cylinder charge distribution, particularly beneficial for BBC applications where runner length and plenum design directly impact mid-range torque delivery and peak horsepower.

Mechanics and engine builders favor the BBC EFI R/P Intake Manifold for street engines, bracket racing platforms, and restorations requiring modern EFI integration without sacrificing traditional BBC power characteristics. The manifold's straightforward installation and proven design make it ideal for shops transitioning customers from carburetors to fuel injection or for complete engine builds where compatibility with modern electronics is essential. Verify clearance with your specific engine bay, cylinder head gasket surface, and accessory configuration before finalizing your build—proper hood clearance and vacuum line routing require planning on some installations.