4150 Square-Bore Intake Manifold for LS1, LS2 & LS6-Style Cylinder Heads
Convert your compatible GM LS engine to a carbureted intake setup with this Polished Aluminum Intake Manifold, designed for LS Gen III and Gen IV engines equipped with LS1, LS2, or LS6-style cathedral-port cylinder heads.
Featuring a 4150 square-bore carburetor flange and an optimized runner layout, this intake manifold is engineered to support a broad torque curve across its specified 1,500–6,500 RPM operating range. Its cast aluminum construction offers a lightweight design with consistent casting wall thicknesses, while the polished finish adds a clean, performance-oriented appearance to your engine bay.
Suitable for carbureted and throttle-body EFI street applications, this manifold includes mounting hardware and gaskets for installation.
LS Gen III/IV Compatibility: Designed for compatible GM LS engines with LS1, LS2, and LS6-style cathedral-port cylinder heads.
Carbureted Intake Conversion: Allows compatible LS engines to use a carbureted intake configuration.
4150 Square-Bore Flange: Designed for compatible 4150 square-bore carburetor setups.
Optimized Runner Design: Engineered to support a broad torque curve across the specified operating RPM range.
1,500–6,500 RPM Operating Range: Designed for performance applications within the specified engine speed range.
Cast Aluminum Construction: Lightweight construction with consistent casting wall thicknesses.
Polished Finish: Provides a clean, performance-oriented appearance.
Flexible Fuel System Applications: Suitable for carbureted or throttle-body EFI street setups.
Replacement Reference: Interchanges with part number 300-130.
Installation Components Included: Supplied with mounting hardware and gaskets.
| Specification | Details |
|---|---|
| Product Type | Carbureted Intake Manifold |
| Engine Compatibility | GM LS Gen III/IV |
| Cylinder Head Style | LS1/LS2/LS6 Cathedral Port |
| Operating RPM Range | 1,500–6,500 RPM |
| Carburetor Flange | 4150 Square Bore |
| Material | Cast Aluminum |
| Finish | Polished |
| Fuel System Applications | Carbureted or Throttle-Body EFI |
| Interchange Part Number | 300-130 |
| Included Components | Mounting Hardware and Gaskets |
Designed for compatible GM LS Gen III and Gen IV engines equipped with:
LS1-style cathedral-port cylinder heads
LS2-style cathedral-port cylinder heads
LS6-style cathedral-port cylinder heads
Important: Compatibility is based on the cylinder head's cathedral-port configuration. Verify your engine generation, cylinder head port style, and fuel-system setup before ordering.
This intake manifold provides a carbureted intake solution for compatible GM LS engines. Its 4150 square-bore flange is designed for matching carburetor configurations, making it suitable for street and performance builds.
The intake features an optimized runner design engineered to support a broad torque curve throughout its specified 1,500–6,500 RPM operating range. This makes it suitable for performance-oriented street applications requiring a carbureted LS intake setup.
Manufactured from cast aluminum, the manifold combines lightweight construction with consistent casting wall thicknesses. Its polished finish provides a clean appearance for custom engine bays and performance builds.
Designed for carbureted and throttle-body EFI street applications, this manifold offers flexibility for compatible LS engine configurations. Confirm the specific fuel-system components and installation requirements for your setup before purchasing.
Polished aluminum carbureted intake manifold
Mounting hardware
Gaskets
Which LS engines does this intake manifold fit?
It is designed for GM LS Gen III and Gen IV engines equipped with LS1, LS2, or LS6-style cathedral-port cylinder heads.
Can this manifold convert an LS engine to a carbureted setup?
Yes. It is designed to provide a carbureted intake configuration for compatible LS engines.
What carburetor flange does it use?
It features a 4150 square-bore carburetor flange.
What is the specified operating RPM range?
The manifold is designed for an operating range of 1,500–6,500 RPM.
Can it be used with throttle-body EFI?
Yes. It is specified for carbureted or throttle-body EFI street applications.
What material is the manifold made from?
It features cast aluminum construction with a polished finish.
Are mounting hardware and gaskets included?
Yes. Both mounting hardware and gaskets are included.
What is the interchange part number?
The listed interchange reference is 300-130.
Will this manifold fit rectangular-port LS cylinder heads?
Compatibility with rectangular-port cylinder heads has not been specified. This manifold is intended for cathedral-port applications.
Designed for GM LS Gen III/IV engines with compatible cathedral-port cylinder heads.
Not specified for rectangular-port cylinder heads.
Requires a compatible 4150 square-bore carburetor configuration.
Confirm fuel-system compatibility and supporting components before installation.
Verify engine generation and cylinder head port style before ordering.
Professional installation is recommended.
WARNING: RACE / COMPETITION USE ONLY
This part is built and sold only for racing vehicles used solely in closed-course competition. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. Off-road or off-highway use is not competition use. Installing this part on a vehicle used on public roads may violate the federal Clean Air Act, 42 U.S.C. 7522(a)(3), and state law, and may result in civil or criminal penalties, failed inspections and loss of registration. Emissions laws vary by state. Check yours before you buy.
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. THE SALE, USE OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. 7522(a)(3)).
$132.00
