GM LS Cathedral Port V Series Billet Aluminum Mid-Rise Intake Manifold - Natural
GM LS Cathedral Port V Series Billet Aluminum Mid-Rise Intake Manifold - Natural
SKU: SKU: 81407
In stock

Product Details
Features
- GM LS Series EFI intake uses 102.200 mm throttle-body sizing with Electronic Fuel Injection provisions for properly matched engine management.
- Runner length: 4.800 in. Plenum thickness: 8 mm. Designed to support consistent airflow distribution across the manifold.
- Fuel rails included: Yes. Rail fitting thread: -10 AN. Injector provision: EV1. Verify injector height and fuel-line routing.
- MAP sensor port: Yes with Gen IV 3-bar. Removable top: Yes. Removable runners: Yes. Check hood clearance, accessory clearance, and wiring reach before installation.
Description
This intake manifold is engineered for GM LS Series applications and helps support consistent airflow, clean fuel distribution, and dependable street performance operation across a wide range of compatible builds.
Airflow & Performance Design
The intake runner and plenum design help support balanced airflow delivery between cylinders while maintaining stable throttle response and dependable street-driven performance.
Construction & Engine-Bay Fitment
The manifold construction to support long-term durability, heat management, and a clean installed appearance in demanding engine-bay environments.
Installation Considerations
Proper installation requires confirming cylinder head compatibility, intake gasket alignment, carburetor or throttle-body configuration, distributor clearance, and hood clearance before final assembly.
System Matching
Verify fuel system compatibility, throttle linkage setup, vacuum routing, sensor provisions, and accessory clearance before installation. This intake manifold is intended for properly matched engine combinations.
Specs
| Center Maximum Height | 10.550 in. |
| Color | Silver |
| Deck Height | Standard |
| Front Maximum Height | 10.086 in. |
| Gasket Or Seal Included | Yes |
| Grade Type | Performance |
| Material | Aluminum |
| Mounting Hole Quantity | 10 |
| Rear Maximum Height | 8.933 in. |
| Single Or Dual Plane Type | Single Plane |
| Basic Operating RPM Range | 1,500-9,000 RPM |
| EGR Port | Yes |
| Fuel Injection Style | Multi-port Fuel Injection |
| Fuel Injector Stye Provision | EV1 |
| Fuel Rail Color | Silver |
| Fuel Rail Finish | Natural |
| Fuel Rail Fitting Thread Diameter | -10 AN |
| Fuel Rail Material | Aluminum |
| Fuel Rails Included | Yes |
| Fuel System Type | Electronic Fuel Injection |
| Intake Port Shape | Cathedral |
| Manifold Absolute Pressure Sensor Port Included | Yes |
| Manifold Absolute Pressure Sensor Port Style | Gen IV 3-bar |
| Manifold Finish | Natural |
| Mounting Hardware Included | Yes |
| Plenum Thickness | 8 mm |
| Removable Runners | Yes |
| Removable Throttle Body Flange | Yes |
| Removable Top | Yes |
| Runner Length | 4.800 in. |
| Supplemental Boss Quantity | 2 |
| Throttle Body Bore Size | 102.200 mm |
Engine Fitment
COMPATIBLE WITH
CHEVROLET SMALL BLOCK V8 GEN. III (LS BASED)
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3
COMMON VEHICLE APPLICATIONS:
Chevrolet Silverado
GMC Sierra
Chevrolet Camaro
Chevrolet Corvette
Chevrolet Tahoe
CTS-V
Q&A
What engines is this intake manifold compatible with?
This intake manifold is designed for GM LS Gen III cathedral port applications, including 4.8L/293ci, 5.3L/325ci, 5.7L/346ci, 6.0L/364ci.
Will this intake fit LS cathedral port engines like 4.8L, 5.3L, 5.7L, or 6.0L combinations?
Yes, this intake is designed for LS cathedral port combinations commonly used in Gen III-based applications.
What fuel system is this intake designed for?
This intake is designed for EFI applications using multi-port fuel injection, making it a strong choice for performance LS builds.
What RPM range is this intake designed for?
This intake is designed to operate from 1,500-9,000 RPM, making it suited for higher-RPM performance use.
How does a single-plane intake help performance?
A single-plane intake is designed to support stronger high-RPM airflow, making it a good choice for aggressive performance combinations that want more top-end power.
Is this intake better for street or race use?
This intake is better suited for aggressive street, street/strip, and higher-RPM performance applications.
What type of intake manifold is this?
This is a single plane, billet aluminum, mid-rise design, for cathedral applications intake manifold built to improve airflow and support performance LS combinations.
Will this intake clear a stock hood?
It features a performance-oriented intake profile, with a front height of 10.086 in., center height of 10.550 in., rear height of 8.933 in., so hood clearance should always be checked against your specific vehicle combination.
What material is this intake made from?
It is made from aluminum, which helps reduce weight while supporting strength and heat control for performance use.
What throttle body size or flange does this intake support?
This intake is designed around a 102.200 mm throttle body configuration, which supports increased airflow for EFI performance applications.
Does runner length affect how this intake performs?
Yes, this manifold uses a runner length of 4.800 in., which helps shape how the intake makes power across the RPM range.
Will this intake improve throttle response on my LS build?
Yes, this intake is designed to improve airflow and mixture distribution, which can help deliver stronger throttle response and more consistent power.
Is this a good upgrade from a stock intake?
Yes, this intake is a strong upgrade for compatible LS applications that need better airflow, stronger power potential, and improved performance over a stock-style manifold.
Does the natural finish affect performance?
No, the natural finish does not change performance—it offers a raw performance look that works well on race- and street-oriented builds.
How should I maintain the natural finish?
Routine cleaning and occasional metal-safe detailing will help keep the natural finish looking its best over time.
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.
GM LS Cathedral Port V Series Billet Aluminum Mid-Rise Intake Manifold - Natural
This intake manifold is engineered for GM LS Series applications and helps support consistent airflow, clean fuel distribution, and dependable street performance operation across a wide range of compatible builds.
Airflow & Performance Design
The intake runner and plenum design help support balanced airflow delivery between cylinders while maintaining stable throttle response and dependable street-driven performance.
Construction & Engine-Bay Fitment
The manifold construction to support long-term durability, heat management, and a clean installed appearance in demanding engine-bay environments.
Installation Considerations
Proper installation requires confirming cylinder head compatibility, intake gasket alignment, carburetor or throttle-body configuration, distributor clearance, and hood clearance before final assembly.
System Matching
Verify fuel system compatibility, throttle linkage setup, vacuum routing, sensor provisions, and accessory clearance before installation. This intake manifold is intended for properly matched engine combinations.
CHEVROLET SMALL BLOCK V8 GEN. III (LS BASED)
• 4.8 L / 293 in3
• 5.3 L / 325 in3
• 5.7 L / 346 in3
• 6.0 L / 364 in3
COMMON VEHICLE APPLICATIONS:
Chevrolet Silverado
GMC Sierra
Chevrolet Camaro
Chevrolet Corvette
Chevrolet Tahoe
CTS-V
SPECIFICATIONS:
Center Maximum Height: 10.550 in.
Color: Silver
Deck Height: Standard
Front Maximum Height: 10.086 in.
Gasket Or Seal Included: Yes
Grade Type: Performance
Material: Aluminum
Mounting Hole Quantity: 10
Rear Maximum Height: 8.933 in.
Single Or Dual Plane Type: Single Plane
Basic Operating RPM Range: 1,500-9,000 RPM
EGR Port: Yes
Fuel Injection Style: Multi-port Fuel Injection
Fuel Injector Stye Provision: EV1
Fuel Rail Color: Silver
Fuel Rail Finish: Natural
Fuel Rail Fitting Thread Diameter: -10 AN
Fuel Rail Material: Aluminum
Fuel Rails Included: Yes
Fuel System Type: Electronic Fuel Injection
Intake Port Shape: Cathedral
Manifold Absolute Pressure Sensor Port Included: Yes
Manifold Absolute Pressure Sensor Port Style: Gen IV 3-bar
Manifold Finish: Natural
Mounting Hardware Included: Yes
Plenum Thickness: 8 mm
Removable Runners: Yes
Removable Throttle Body Flange: Yes
Removable Top: Yes
Runner Length: 4.800 in.
Supplemental Boss Quantity: 2
Throttle Body Bore Size: 102.200 mm