RHS 12903 Small Block Chevy EFI Single Plane Intake Manifold,23 Degree
One Carburetor Quantity, 4-Barrel Square Bore Carburetor Flange Type
- This item ships directly from the manufacturer. It may take an additional 3 business days for Racing Head Service to ship this item.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Finally, An SBC Intake Engineered For Today's Applications
The RHS Single Plane 23° Aluminum Intake Manifold is engineered specifically to port match fit RHS Small Block Chevy cylinder heads. Additionally, this manifold is the only one designed with bolt machining to fit all versions of Small Block Chevy cylinder heads, including classic originals, Vortec GM heads and late model perimeter corner vertical bolt style crate engine heads. It provides 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 manifold also features 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.
Integral Sensors - Injectors Angled Directly At Valves - Uses LS-Style Sensors & Injectors
RHS and sister company FAST teamed up to design the revolutionary port fuel injection version of these manifolds. Unlike the competition, the EFI manifold features port angle optimized injector mounting and machining features. FAST engineers laid the injectors down on an angle that points injectors directly at the valve stem. Additionally, the EFI manifold features integral air temp and MAP sensors improving function, fitment and packaging.
Does NOT include fuel rails -
Fits all "Gen 1" SBC heads ('55-'02) - From classic originals to Vortec to late-model perimeter corner vertical-bolt crate engines
Port angle optimized injector mounting - Injector holes are machined so injectors are angled directly at valves
Integral air temp & MAP sensors improve function, fitment & packaging - Uses LS1-Style MAP & air temp sensor
Strong torque curve throughout mid-RPM range - Excellent for performance street, circle track & drag race engines up to 434c.i.
4150 flange works w/ aftermarket 4BBL throttle bodies or a late-model throttle body adaptor elbow of your choice
Dual sided distributor mount - Auxiliary fittings at all four corners allow external water lines for reverse cooling
*Depending on the cylinder heads/valve covers being used, minor clearancing to the intake manifold may be required.
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Q & A
Tim talks about the new Edelbrock powder coated cylinder heads and provides a little history on Federal Mogul heads.
Tim talks about his favorite intake manifold, the Might Edelbrock X1.
Tim talks about the Offenhauser 4 x 2 Pacesetter intake.
Dave gives a few tips on how to select the appropriate intake manifold for your project.
Speedway Motors Product Manager Jeff K. talks about how to really make your engine bay stand out from the crowd with just a little patience, and some Speedway products.
Do you have carbs sitting on the shelf waiting to be put on? Heath talks about the preparation and parts needed to install a set of Super 9-7 Carbs on his 1949 Flathead 8BA V8 Model A.
Information of the function of intake manifolds and a little information on how to choose the right one for your rebuild.