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Top Street Performance

GM LS Gen III Cathedral Port Carbon Fiber Hi-Rise Intake Manifold

GM LS Gen III Cathedral Port Carbon Fiber Hi-Rise Intake Manifold

SKU: 81632

$4,400.00
$4,400.00 $5,000.00
Shipping calculated at checkout.

Out of stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Fits LS1, LS6 & Gen III LS engines
  • Hi-rise runners maximize airflow
  • Lightweight carbon fiber construction
  • Supports high-horsepower EFI builds

Description

Upgrade your LS-powered build with the Top Street Performance GM LS Gen III Cathedral Port Carbon Fiber Hi-Rise Intake Manifold. Engineered for LS1, LS6, 4.8L, 5.3L, 5.7L, and 6.0L cathedral-port engines, this LS carbon fiber intake manifold delivers exceptional airflow, lightweight construction, and high-RPM performance for serious street, drag racing, track, and LS swap applications.

Constructed from premium carbon fiber with precision-machined aluminum flanges, this LS cathedral port intake manifold helps reduce weight while improving heat management compared to traditional cast aluminum intake manifolds. The hi-rise runner design is engineered to maximize airflow and support increased horsepower potential, making it an excellent choice for naturally aspirated, nitrous, supercharged, and turbocharged LS combinations.

Designed for performance applications operating from 1,500 to 9,000 RPM, this LS hi-rise intake manifold provides the airflow capacity required for aggressive camshaft combinations and high-horsepower engine builds. The removable top design allows easy access for tuning, maintenance, and future upgrades, while the included fuel rails help simplify installation.

Whether you're upgrading an LS1 intake manifold, building a turbocharged 5.3 LS, maximizing airflow on a 6.0 LS project, or assembling a dedicated race engine, this carbon fiber LS intake manifold delivers the airflow, weight savings, and performance potential needed for serious LS enthusiasts.

 

Carbon Fiber Intake Manifold Technology
The Top Street Performance LS Gen III Cathedral Port Hi-Rise Intake Manifold is engineered for maximum airflow, reduced weight, and premium engine bay appearance. Constructed from lightweight carbon fiber with precision-machined aluminum flanges, this intake manifold helps reduce weight while improving heat management for demanding performance applications. The removable top design provides convenient access for tuning, maintenance, and upgrades.

High-RPM Performance Benefits
The hi-rise runner design is engineered to increase airflow efficiency and support higher horsepower levels than traditional intake configurations. Designed for a broad 1,500-9,000 RPM operating range, this LS hi-rise intake manifold is ideal for performance enthusiasts looking to maximize airflow, improve throttle response, and support aggressive engine combinations.

Specs

Basic Operating RPM Range 1,500-9,000 RPM
Color Black
Deck Height Standard
Fuel Injection Style Multi-port Fuel Injection
Fuel Injector Stye Provision 2.55 in. LS1 style
Fuel Rail Color Black
Fuel Rail Finish Black
Fuel Rail Fitting Thread Diameter 10 ORB
Fuel Rail Material Aluminum
Fuel Rails Included Yes
Fuel System Type Electronic Fuel Injection
Gasket Or Seal Included Yes
Grade Type Performance
Intake Port Shape Cathedral
Manifold Absolute Pressure Sensor Port Included Yes
Manifold Absolute Pressure Sensor Port Style Gen IV 3-bar
Manifold Finish Natural
Material Carbon Fiber
Mounting Hardware Included Yes
Mounting Hole Quantity 10
Removable Runners Yes
Removable Throttle Body Flange No
Removable Top Yes
Supplemental Boss Quantity 2
Throttle Body Bore Size 102.200 mm

Engine Fitment

COMPATIBLE WITH
GM Gen III Cathedral Port LS Engines
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3

COMMON VEHICLE APPLICATIONS
• Chevrolet Camaro LS swaps
• Chevrolet Corvette LS1 & LS6 applications
• Chevrolet Silverado LS builds
• Chevrolet C10 LS conversions
• Chevrolet Chevelle LS swaps
• Pontiac GTO LS projects
• Custom race cars and restomods

NOTES
• Fits GM Gen III cathedral-port LS cylinder heads
• Designed for EFI applications only
• Features a 102.2mm throttle body opening
• Includes black aluminum fuel rails with 10 ORB fittings
• Uses LS1-style fuel injector provisions
• Includes Gen IV 3-bar MAP sensor provision
• Removable top design simplifies tuning and maintenance
• Includes mounting hardware and gaskets
• Verify throttle body, fuel system, injector, and hood clearance before installation

Q&A

Will this intake manifold fit an LS1 engine?
Yes. This intake manifold is designed for GM Gen III cathedral-port LS engines, including LS1 applications.

Will this intake fit a 5.3 LS engine?
Yes. Compatible cathedral-port 5.3L LS engines are supported.

What is the advantage of a hi-rise intake manifold?
A hi-rise intake manifold uses taller runners to improve airflow and support increased horsepower potential, making it ideal for high-performance and racing applications.

What RPM range is this intake designed for?
This intake manifold is designed to support performance applications from 1,500 to 9,000 RPM.

Will this intake fit LS3 cylinder heads?
No. LS3 engines use rectangle-port cylinder heads and require a rectangle-port intake manifold.

What are the benefits of carbon fiber construction?
Carbon fiber helps reduce weight, improve heat management, and provides a premium appearance compared to traditional cast aluminum manifolds.

Does this intake include fuel rails?
Yes. Black aluminum fuel rails with 10 ORB fittings are included.

Is this intake suitable for turbocharged or supercharged applications?
Yes. The high-flow design makes it suitable for naturally aspirated and boosted LS engine combinations.

Emissions Notice

This product is legal for off road use and non pollution controlled vehicles (1965 & older); however, it has not been tested or approved by the California Air Resources Board (CARB) for highway vehicles in the state of California. By purchasing this product, buyer agrees it will not be used on pollution controlled vehicles in California, or in a state with similar emissions regulations.