GM LS Rectangle Port Carbureted Dual Plane Alu. Intake Manifold

Speedway Motors

#28981129

GM LS Rectangle Port Carbureted Dual Plane Alu. Intake Manifold

Fits GM Gen IV LS Rectangle Port engines
Features a dual plane design
Composed of aluminum for light weight and improved heat management

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$307.99

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Product Summary

Carbureted Fuel System Type, One Carburetor Quantity

Fits GM Gen IV LS Rectangle Port engines
Features a dual plane design
Composed of aluminum for light weight and improved heat management
Available in Raw, Polished or Black finishes

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Key Specs

MFG. Part #	Select Finish
Intake Manifold Type	Dual Plane
Carburetor Flange Type	4-Barrel Spread Bore
RPM Range	1,500-6,500
Material Type	Aluminum

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Details

This GM LS Rectangle Port Carbureted Dual Plane Aluminum Intake Manifold is built for street-performance Gen IV LS rectangle-port engines where you want the simplicity of a carb and strong torque without giving up top-end pull. The dual-plane layout is designed to sharpen throttle response and build usable power across a broad range, making it a solid choice for a street car that still wants to hit hard when you lean into it.

Cast from lightweight aluminum with a low-profile design, it helps with hood clearance and manages heat well compared to heavier castings. It’s set up for a single 4150 square-bore carburetor and includes the needed gasket/seal, keeping the install straightforward on compatible Gen IV LS-based small-block V8 applications like a 6.2L/376ci.

Fits GM Gen IV LS Rectangle Port engines
Features a dual plane design
Composed of aluminum for light weight and improved heat management
Available in Raw, Polished or Black finishes

Application

Compatible with Chevy Small Block V8 GEN. IV (LS BASED):

6.2 L / 376 in

Specs

Basic Operating RPM Range: 1,500-6,500 RPM
Carburetor Flange Style: 4150 Square Bore
Carburetor Quantity: 1
Deck Height: Standard
EGR Port: No
Front Maximum Height: 5.070 in.
Fuel System Type: Carbureted
Gasket Or Seal Included: Yes
Grade Type: Performance
Intake Port Shape: Rectangle
Material: Aluminum
Mounting Hole Quantity: 10
Rear Maximum Height: 6.140 in.
Single Or Dual Plane Type: Dual Plane

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

Specifications

KEY SPECS
MFG. Part #	Select Finish to see
Brand	Speedway Motors
Intake Manifold Type	Dual Plane
Carburetor Flange Type	4-Barrel Spread Bore
RPM Range	1,500-6,500
Material Type	Aluminum

GENERAL
Fuel System Type	Carbureted
Carburetor Quantity	One
Finish	Select Finish to see
EGR	No
Gaskets Included	Yes
Sold in Quantity	Each

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