Chevy Small Block Carbureted Dual Plane Aluminum Intake Manifold - Polished

• Chevy small block dual plane intake is built for carbureted systems with Spread Bore (4150 Square Bore with Included Adapter) carburetor flange compatibility.

• Operating range: Idle-5,500 RPM. Deck height: Standard. Designed to match the camshaft, cylinder heads, and vehicle use.

• Aluminum construction with polished finish supports durability, sealing, and clean engine-bay presentation.

• Front/center/rear height: 3.500 in., 4.050 in., 4.600 in. EGR: Yes. Verify hood clearance, distributor clearance, gasket alignment, and accessory spacing.

Built for upgraded induction performance, this intake manifold supports improved airflow characteristics and stable fuel delivery for GM LS Series using properly matched carburetor or EFI configurations.

Airflow & Performance Design
The intake runner and plenum design help support balanced airflow delivery between cylinders while maintaining stable throttle response and dependable street-driven performance.

Construction & Engine-Bay Fitment
The manifold construction to support long-term durability, heat management, and a clean installed appearance in demanding engine-bay environments.

Installation Considerations
Proper installation requires confirming cylinder head compatibility, intake gasket alignment, carburetor or throttle-body configuration, distributor clearance, and hood clearance before final assembly.

System Matching
Verify fuel system compatibility, throttle linkage setup, vacuum routing, sensor provisions, and accessory clearance before installation. This intake manifold is intended for properly matched engine combinations.

What engines is this intake manifold compatible with?
This intake manifold is designed for 1955–1986 Chevrolet Small Block V8 engines and can also be used on later models with the appropriate adapters.

Will this fit a 350 Small Block Chevy?
Yes, this intake is fully compatible with 350 SBC engines, along with other common displacements like 305, 327, and 400.

Will this intake work with Vortec heads or LT1 engines?
This intake is not compatible with reverse-flow LT1-style heads and may require modifications or a different manifold for Vortec applications.

Can I run both square bore and spread bore carburetors?
Yes, the intake is designed for spread bore carburetors but includes an adapter plate and gasket to support square bore carburetors as well.

What RPM range is this intake designed for?
This dual-plane intake is designed to operate from idle up to approximately 5,500 RPM, making it ideal for street performance builds.

What kind of performance gains can I expect?
This intake improves airflow efficiency, resulting in better throttle response, increased torque, and improved drivability compared to stock manifolds.

Is this intake better for street or race use?
This manifold is best suited for street performance and mild street/strip applications where low- and mid-range power is important.

What type of intake manifold is this?
This is a dual-plane intake manifold, which improves low-end torque and drivability by separating airflow into two planes.

Will this intake clear a stock hood?
Yes, it features a low-profile design that helps maintain hood clearance in most factory engine bays.

What material is this intake made from?
It is made from lightweight aluminum, which improves heat dissipation and reduces overall engine weight.

Is this a direct bolt-on intake manifold?
In most cases, this intake installs as a direct replacement for factory SBC manifolds, though proper gaskets and setup are recommended.

What additional parts are needed for installation?
You may need intake gaskets, carburetor linkage adjustments, and possibly an adapter depending on your carburetor configuration.

Will this intake improve throttle response on my SBC?
Yes, the dual-plane design increases air velocity at lower RPMs, resulting in improved throttle response and smoother drivability.

Is this a good upgrade from a stock intake?
Yes, this intake offers better airflow and improved power delivery across the usable RPM range compared to factory manifolds.

Does the polished finish affect performance?
No, the polished finish is purely cosmetic and does not impact performance—it provides a clean, show-quality appearance.

How do I maintain the polished finish?
Regular cleaning and occasional polishing will help maintain shine and prevent oxidation over time.