RHS® 23-Degree Aluminum Intake Manifolds

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Memphis, TN – RHS® 23-Degree Aluminum Intake Manifolds are designed to provide power and a strong torque curve throughout the mid-RPM range for both EFI and carbureted Small Block Chevy applications.

RHS® 23-Degree Aluminum Intake Manifolds are engineered specifically to port match fit RHS® 23-degree Small Block Chevy cylinder heads. Additionally, these manifolds are the only ones designed with a 4150 flange and bolt machining to fit all versions of SBC heads, including classic originals, Vortec GM heads and late model perimeter corner vertical bolt style crate engine heads. They provide the power and strong torque curve throughout the mid-RPM range that is required for performance street, circle track and drag race applications up to 434c.i. The manifolds also feature auxiliary water ports, integral water crossover and dual sided distributor mounting points. Female pipe fittings at all four corners allow external water lines for reverse cooling applications. RHS® and sister company FAST™ have also teamed up to design a revolutionary port fuel injection version of the 23-Degree Aluminum Manifolds. Unlike the competition, the EFI manifold features port angle, optimized injector bung mounting and machining features. FAST™ engineers laid the injectors down on an angle that points injectors directly at the valve stem. The EFI manifold also features integral sensors improving function, fitment and packaging. It is the only 4BBL-type EFI manifold available with an integral idle air control circuit.

Quick Facts

Product: RHS® 23-Degree Aluminum Intake Manifolds
Part Number: #12902 (Carbureted); #12902P (Carbureted, Polished); #12903 (EFI); #12903P (EFI, Polished)

Social Media Pitch: RHS® 23-Degree Aluminum Intake Manifolds provide power & strong torque curve throughout mid-RPM range for EFI & carbureted SBC applications

Features & Benefits:
•Specifically engineered to port match RHS® 23-degree SBC heads for perfect fitment
•Only manifolds designed with a 4150 flange & bolt machining to fit all versions of SBC cylinder heads
•Provide the power & strong torque curve through the mid-RPM range required for performance street, circle track & drag race applications up to 434c.i.
•EFI version features port angle, optimized injector bung mounting & machining features
•EFI manifold includes integral sensors improving function, fitment & packaging
•Only 4-BBL type EFI manifold on the market with an integral idle air control circuit