GM LS Rectangle Port Carbureted Dual Plane Aluminum Intake Manifold - Polished
GM LS Rectangle Port Carbureted Dual Plane Aluminum Intake Manifold - Polished
SKU: SKU: 81129P
Low stock
Product Details
Features
- Fits LS3, L92, L99, LY6 & L76 applications
- Dual-plane design for street performance
- Converts LS engines to carbureted operation
- Polished aluminum performance construction
Description
Convert your LS-powered build to a traditional carbureted induction system with the Top Street Performance GM LS Rectangle-Port Carbureted Dual Plane Aluminum Intake Manifold. Designed for Chevrolet LS rectangle-port engines, this polished aluminum intake manifold provides a simple and effective solution for LS carburetor conversions, street performance builds, muscle cars, hot rods, and custom engine swaps.
Engineered with a dual-plane runner design, this LS carbureted intake manifold is optimized to deliver strong throttle response, excellent drivability, and balanced power throughout the 1500-6500RPM operating range. The dual-plane configuration helps improve low- and mid-range performance, making it an excellent choice for street-driven vehicles and performance applications seeking broad power delivery.
Constructed from lightweight aluminum with a polished finish, this intake manifold provides durability, corrosion resistance, and a clean performance appearance. The square-bore carburetor flange supports popular carburetor configurations while allowing builders to eliminate factory EFI components and simplify engine management requirements.
Designed for Chevrolet LS rectangle-port engines including LS3, L92, L99, LY6, and L76 rectangle-port applications, this intake manifold is ideal for classic muscle cars, street rods, hot rods, trucks, and custom LS swap projects.
Whether you're performing an LS carb conversion, building a street-driven LS3-powered vehicle or installing a carbureted LS engine into a classic car, this polished dual-plane intake manifold delivers the drivability, simplicity, and performance enthusiasts demand.
Dual Plane Intake Manifold Technology
The Top Street Performance LS Rectangle-Port Carbureted Dual Plane Intake Manifold is engineered for enthusiasts looking to convert modern LS engines to a traditional carbureted induction system. The dual-plane design separates intake runners to help improve mixture distribution and street-friendly performance while maintaining excellent drivability.
Performance Benefits
Designed to operate throughout the manufacturer's published 1,500-6,500 RPM range, this dual-plane intake manifold delivers strong low-end response, broad mid-range power, and excellent street performance characteristics. Its design makes it an ideal choice for cruising, weekend performance vehicles, street rods, hot rods, and classic muscle car LS swap projects.
Specs
| Basic Operating RPM Range | 1,500-6,500 RPM |
| Carburetor Flange Style | 4150 Square Bore |
| Carburetor Quantity | 1 |
| Color | Polished |
| 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 |
Engine Fitment
COMPATIBLE WITH
CHEVROLET LS RECTANGLE-PORT ENGINES
• 6.0L / 364 in³ (LY6, L76, L96)
• 6.2L / 376 in³ (LS3, L92, L99)
Rectangle-port applications only
COMMON VEHICLE APPLICATIONS
• Chevrolet Camaro SS (LS3, L99)
• Chevrolet Corvette (LS3)
• Escalade (L92)
• Chevrolet Silverado 2500HD / 3500HD (LY6, L96)
• GMC Sierra 2500HD / 3500HD (LY6, L96)
• Chevrolet Suburban 2500 (LY6)
• GMC Yukon XL 2500 (LY6)
• Pontiac G8 GXP (LS3)
• Chevrolet SS (LS3)
NOTES
• Fits Chevrolet LS rectangle-port engines only
• Designed for carbureted fuel systems
• Dual-plane intake manifold design
• Square-bore carburetor flange configuration
• Verify carburetor, distributor, fuel system, and hood clearance compatibility before installation
• Not compatible with LS1, LS2, LS6, LR4, LM7, LQ4, LQ9, or other cathedral-port cylinder heads
Q&A
What engines is this intake manifold designed for?
This intake manifold fits Chevrolet LS rectangle-port engines including LS3, L92, L99, LY6, and L76 applications.
Will this intake manifold fit an LS3 engine?
Yes. LS3 applications are specifically listed in the published fitment.
Will this intake manifold fit an L92 engine?
Yes. L92 rectangle-port applications are supported.
Will this intake manifold fit an L99 engine?
Yes. L99 rectangle-port applications are supported.
Will this intake manifold fit a LY6 engine?
Yes. Compatible LY6 rectangle-port applications are supported.
What is the advantage of a dual-plane intake manifold?
A dual-plane intake manifold helps improve low- and mid-range performance, throttle response, and street drivability while maintaining strong overall performance characteristics.
What RPM range is this intake manifold designed for?
This intake manifold is designed to operate throughout the manufacturer's published 1,500-6,500 RPM range.
Is this intake manifold designed for carbureted applications?
Yes. This intake manifold is specifically designed for carbureted LS engine conversions.
Can I convert my LS3 from EFI to a carburetor with this intake?
Yes. This intake manifold is designed to support carbureted conversions on compatible rectangle-port LS engines.
Will this intake fit LS1 or LS6 cylinder heads?
No. This intake manifold is designed for rectangle-port LS engines and is not compatible with cathedral-port cylinder heads.
Emissions Notice
This Top Street Performance (TSP) product is designed for racing and off-road competition use only. It is not legal for use on public roads or emissions-controlled vehicles and does not comply with federal, state, or local emissions regulations. The buyer assumes all responsibility for legal use and installation.
What is a Emissions-Controlled Vehicle?
"An emissions-controlled vehicle is any vehicle equipped with a factory-installed emissions control system designed to reduce air pollution. These systems include catalytic converters, oxygen sensors, EGR (Exhaust Gas Recirculation) valves, and diesel particulate filters (DPF). Most vehicles manufactured after 1975 are considered emissions-controlled and must comply with federal and state emissions laws when used on public roads."
GM LS Rectangle Port Carbureted Dual Plane Aluminum Intake Manifold - Polished
Convert your LS-powered build to a traditional carbureted induction system with the Top Street Performance GM LS Rectangle-Port Carbureted Dual Plane Aluminum Intake Manifold. Designed for Chevrolet LS rectangle-port engines, this polished aluminum intake manifold provides a simple and effective solution for LS carburetor conversions, street performance builds, muscle cars, hot rods, and custom engine swaps.
Engineered with a dual-plane runner design, this LS carbureted intake manifold is optimized to deliver strong throttle response, excellent drivability, and balanced power throughout the 1500-6500RPM operating range. The dual-plane configuration helps improve low- and mid-range performance, making it an excellent choice for street-driven vehicles and performance applications seeking broad power delivery.
Constructed from lightweight aluminum with a polished finish, this intake manifold provides durability, corrosion resistance, and a clean performance appearance. The square-bore carburetor flange supports popular carburetor configurations while allowing builders to eliminate factory EFI components and simplify engine management requirements.
Designed for Chevrolet LS rectangle-port engines including LS3, L92, L99, LY6, and L76 rectangle-port applications, this intake manifold is ideal for classic muscle cars, street rods, hot rods, trucks, and custom LS swap projects.
Whether you're performing an LS carb conversion, building a street-driven LS3-powered vehicle or installing a carbureted LS engine into a classic car, this polished dual-plane intake manifold delivers the drivability, simplicity, and performance enthusiasts demand.
Dual Plane Intake Manifold Technology
The Top Street Performance LS Rectangle-Port Carbureted Dual Plane Intake Manifold is engineered for enthusiasts looking to convert modern LS engines to a traditional carbureted induction system. The dual-plane design separates intake runners to help improve mixture distribution and street-friendly performance while maintaining excellent drivability.
Performance Benefits
Designed to operate throughout the manufacturer's published 1,500-6,500 RPM range, this dual-plane intake manifold delivers strong low-end response, broad mid-range power, and excellent street performance characteristics. Its design makes it an ideal choice for cruising, weekend performance vehicles, street rods, hot rods, and classic muscle car LS swap projects.
COMPATIBLE WITH
CHEVROLET LS RECTANGLE-PORT ENGINES
• 6.0L / 364 in³ (LY6, L76, L96)
• 6.2L / 376 in³ (LS3, L92, L99)
Rectangle-port applications only
COMMON VEHICLE APPLICATIONS
• Chevrolet Camaro SS (LS3, L99)
• Chevrolet Corvette (LS3)
• Escalade (L92)
• Chevrolet Silverado 2500HD / 3500HD (LY6, L96)
• GMC Sierra 2500HD / 3500HD (LY6, L96)
• Chevrolet Suburban 2500 (LY6)
• GMC Yukon XL 2500 (LY6)
• Pontiac G8 GXP (LS3)
• Chevrolet SS (LS3)
NOTES
• Fits Chevrolet LS rectangle-port engines only
• Designed for carbureted fuel systems
• Dual-plane intake manifold design
• Square-bore carburetor flange configuration
• Verify carburetor, distributor, fuel system, and hood clearance compatibility before installation
• Not compatible with LS1, LS2, LS6, LR4, LM7, LQ4, LQ9, or other cathedral-port cylinder heads
SPECIFICATIONS:
Basic Operating RPM Range: 1,500-6,500 RPM
Carburetor Flange Style: 4150 Square Bore
Carburetor Quantity: 1
Color: Polished
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
