Oldsmobile Small Block V8 Dual Plane Aluminum Intake Manifold - Polished

• compatible dual plane intake is built for carbureted systems with Spread Bore carburetor flange compatibility.

• Operating range: 1,500-6,500 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: 4.800 in., 5.300 in., 5.800 in. Verify hood clearance, distributor clearance, gasket alignment, and accessory spacing.

Designed for GM LS Series, this intake manifold is built to support balanced airflow distribution, dependable throttle response, and strong mid-range performance in properly matched engine combinations.

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 Oldsmobile Small Block V8 applications, including 307 in3, 330 in3, 350 in3, 403 in3.

Will this intake fit common Oldsmobile small block engines?
Yes, this intake fits Oldsmobile small block combinations including 307, 330, 350, and 403 engines.

What type of carburetor flange does this intake use?
This intake uses a spread bore carburetor flange and is built for single 4-barrel carbureted applications.

What RPM range is this intake designed for?
This dual plane intake is designed to perform from 1,500-6,500 RPM, making it a strong choice for performance street and street/strip use.

What kind of performance gains can I expect?
This intake is designed to improve airflow efficiency, throttle response, and torque over a broad operating range compared to a stock-style intake manifold.

Is this intake better for street or race use?
This intake is best suited for street performance and mild street/strip applications where drivability and broad usable power are important.

What type of intake manifold is this?
This is a dual plane aluminum intake manifold, built to improve low-end and mid-range performance while maintaining good drivability.

Will this intake clear a stock hood?
It features a relatively low-profile design to help with hood clearance, with a front height of 4.800 in., center height of 5.300 in., rear height of 5.800 in..

What material is this intake made from?
It is cast from lightweight aluminum, which helps reduce weight and improve heat dissipation.

Is this a direct bolt-on intake manifold?
In most cases, this intake is designed as a direct-fit manifold for compatible Oldsmobile Small Block V8 applications, though proper gaskets, carburetor setup, and supporting components are still recommended during installation.

Are there any special installation notes for this intake?
Yes, this intake has no provision for a factory-style choke, so your carburetor and linkage setup should match that configuration.

Will this intake improve throttle response on my Oldsmobile Small Block?
Yes, the manifold design helps improve airflow and mixture distribution, which can translate to better throttle response and more consistent power delivery.

Is this a good upgrade from a stock intake?
Yes, this intake is a solid upgrade for compatible Oldsmobile Small Block V8 builds that need improved airflow, better drivability, and stronger performance across the usable RPM range.

Does the polished finish affect performance?
No, the polished finish is cosmetic and does not change performance—it gives the intake a bright, show-quality appearance.

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