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Top Street Performance

GM LS Cathedral Port V Series Billet Aluminum Low-Rise Intake Manifold - Black

GM LS Cathedral Port V Series Billet Aluminum Low-Rise Intake Manifold - Black

SKU: SKU: 81406BK

Regular price $4,395.55
Sale price $4,395.55 Regular price $4,994.94
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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
  • Billet aluminum performance construction
  • Low-rise design improves clearance
  • Supports high-horsepower EFI builds

Description

Upgrade your LS-powered build with the Top Street Performance GM LS Cathedral Port V Series Billet Aluminum Low-Rise Intake Manifold. Designed for GM Gen III cathedral-port LS engines, this LS billet intake manifold combines premium T-6061 billet aluminum construction, exceptional airflow capability, and a modular design that supports high-performance street, race, and LS swap applications.

Fresh off its award-winning appearance at the 2024 SEMA Show, the V Series intake manifold was engineered to improve airflow efficiency, enhance throttle response, and deliver the performance potential serious LS enthusiasts demand. The low-rise design provides improved hood clearance for many LS swap, street performance, and restomod applications while maintaining the airflow needed for high-horsepower engine combinations.

Manufactured from T-6061 billet aluminum, this LS cathedral port intake manifold offers exceptional durability, premium appearance, and precise machining throughout. The modular design simplifies installation, maintenance, and future upgrades, while included custom V Series fuel rails help create a clean, professional engine bay appearance.

Whether you're upgrading an LS1 intake manifold, building a turbocharged 5.3 LS, improving airflow on a 6.0 LS combination, or completing a custom LS swap, this billet aluminum LS intake manifold provides the airflow capacity, serviceability, and performance-focused design needed for serious street and competition builds.

 

Billet Aluminum Intake Manifold Technology
The Top Street Performance V Series Intake Manifold is manufactured from premium T-6061 billet aluminum and engineered specifically for GM Gen III cathedral-port LS engines. Precision-machined construction provides exceptional strength, durability, and appearance while creating a premium engine bay upgrade for street and racing applications. The modular design simplifies installation, maintenance, and future modifications.

Performance Benefits
The runner design is engineered to improve airflow efficiency and support increased engine performance across a broad RPM range. Combined with a low-rise configuration, this intake manifold delivers excellent airflow capability while helping maintain hood clearance in many LS swap and performance vehicle applications. The multi-port EFI design supports naturally aspirated and boosted engine combinations.

Specs

Basic Operating RPM Range1,500-9,000 RPM
Center Maximum Height8.750 in.
ColorBlack
Deck HeightStandard
EGR PortYes
Front Maximum Height8.286 in.
Fuel Injection StyleMulti-port Fuel Injection
Fuel Injector Stye ProvisionEV1
Fuel Rail ColorBlack
Fuel Rail FinishBlack
Fuel Rail Fitting Thread Diameter-10 AN
Fuel Rail MaterialAluminum
Fuel Rails IncludedYes
Fuel System TypeElectronic Fuel Injection
Gasket Or Seal IncludedYes
Grade TypePerformance
Intake Port ShapeCathedral
Manifold Absolute Pressure Sensor Port IncludedYes
Manifold Absolute Pressure Sensor Port StyleGen IV 3-bar
Manifold FinishBlack
MaterialAluminum
Mounting Hardware IncludedYes
Mounting Hole Quantity10
Plenum Thickness8 mm
Rear Maximum Height7.132 in.
Removable RunnersYes
Removable Throttle Body FlangeYes
Removable TopYes
Runner Length3.000 in.
Single Or Dual Plane TypeSingle Plane
Supplemental Boss Quantity2
Throttle Body Bore Size102.200 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 street rods and restomods

NOTES
• Fits GM Gen III cathedral-port LS cylinder heads
• Designed for electronic fuel injection (EFI) applications
• Includes custom V Series fuel rails
• Features Gen IV 3-bar MAP sensor provision
• Uses EV1-style injector provisions
• Billet aluminum construction with black finish
• Low-rise design helps improve hood clearance in many applications
• Verify throttle body, fuel system, injector, and hood clearance before installation
• Not compatible with rectangle-port LS cylinder heads

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 5.3L cathedral-port LS engine combinations are supported.

What are the benefits of billet aluminum construction?
Billet aluminum provides exceptional strength, precise machining, premium appearance, and durability for high-performance applications.

Why choose a low-rise intake manifold?
A low-rise intake manifold helps improve hood clearance in many LS swap, street performance, and restomod applications while maintaining excellent airflow capability.

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

Does this intake include fuel rails?
Yes. Custom V Series fuel rails are included with the intake manifold.

Is this intake designed for EFI applications?
Yes. This intake manifold is designed for multi-port electronic fuel injection systems.

Is this intake suitable for turbocharged or supercharged engines?
Yes. The manifold is suitable for naturally aspirated and boosted LS engine combinations when properly configured.

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."