GM LS Gen 3 Cathedral Port Carbon Fiber Low Rise Intake Manifold
GM LS Gen 3 Cathedral Port Carbon Fiber Low Rise Intake Manifold
Speedway Motors

|

#28981631

GM LS Gen 3 Cathedral Port Carbon Fiber Low Rise Intake Manifold

  • Carbon Fiber
  • Hardware Included
  • Sold as Each
See More

$2,199.95

/each

In Stock

Order soon, only 1 left in stock!


Quantity

Need Help? Call to Order

Add to a list

Share

Select an engine to verify Fitment

Select Engine

Product Summary

Single Plane | Low Rise Intake Manifold Type

  • Carbon Fiber
  • Hardware Included
  • Sold as Each
See more details

Key Specs

MFG. Part #28981631
BrandSpeedway Motors
Intake Manifold TypeSingle Plane | Low Rise
RPM Range1,500-9,000
Material TypeCarbon Fiber
See more specs

Need To Know

Need help?

855.313.9176
View the Help Center

Quick and Easy Returns

Return Policy

Speedway Motors 28981631 Details

The TSP GM LS Gen 3 Cathedral Port Carbon Fiber Low Rise Intake Manifold is built for LS enthusiasts who want modern performance with standout underhood appearance. Designed for GM LS Gen III cathedral port engines, this intake combines lightweight carbon fiber construction with precision-machined aluminum flanges to reduce weight compared to heavier factory-style cast manifolds while also helping manage heat. Its low-rise runner design supports strong airflow and broad performance potential, making it a great fit for everything from restomods and street builds to track-focused combinations.

This intake manifold kit is engineered with both power and serviceability in mind. The removable top allows easier access for tuning, inspection, and future upgrades, while the included black aluminum fuel rails with 10 ORB fittings are ready to support high-performance electronic fuel injection setups. It features LS1-style 2.55-inch injector provisions, a Gen IV 3-bar MAP sensor port, a 102.2 mm throttle body bore, and a modular layout that makes installation and maintenance more convenient. Designed for 4.8L, 5.3L, 5.7L, and 6.0L LS-based Gen III engines, this intake delivers a strong blend of airflow, function, and premium materials.

  • Carbon Fiber
  • Hardware Included
  • Sold as Each

Application

Designed to fit SBC V8 GEN. III (LS BASED):

  • 4.8 L / 293 in"
  • 5.3 L / 325 in"
  • 5.7 L / 346 in"
  • 6.0 L / 364 in"

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 Styl - 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

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

Speedway Motors 28981631 Specifications

KEY SPECS
MFG. Part #28981631
BrandSpeedway Motors
Intake Manifold TypeSingle Plane | Low Rise
RPM Range1,500-9,000
Material TypeCarbon Fiber
GENERAL
Hardware IncludedYes
Sold in QuantityEach

Questions & Answers

Be the first to ask a question.

Fitment

  • GM LM4

  • GM LS6

  • GM LS2

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM LM7

  • GM LQ9

  • GM L76

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LY5

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LS1

  • GM LS1

  • GM LS1

  • GM LS6

  • GM LS2

  • GM LS4

  • GM LS4

  • 4.8 Chevy LS V8

  • GM LM7

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LQ9

  • GM LQ4

  • GM L98

  • GM LM7

  • GM LQ4

  • GM L98

  • GM LQ9

  • GM L98

  • GM LQ4

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM L98

  • GM LQ4

  • GM LQ4

  • GM L98

  • GM LZ1

  • GM LM4

  • GM L77

  • GM LMG

  • GM LY5

  • GM LM7

  • GM L59

  • GM LM7

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LQ4

  • GM L96

  • GM LMG

  • GM LY5

  • 4.8 Chevy LS V8

  • GM L59

  • GM LM7

  • 4.8 Chevy LS V8

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LMG

  • GM LY5

  • GM LH6

  • GM LS2

  • GM LM4

  • GM LM4

  • GM LM4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM LM7

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L33

  • GM LQ4

  • GM L20

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM L33

  • GM L59

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM LM7

  • GM LQ4

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM L96

  • GM LQ4

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • 4.8 Chevy LS V8

  • GM L20

  • GM LM7

  • GM LY2

  • GM LZ1

  • GM LC9

  • GM LMG

  • GM LZ1

  • GM LM7

  • GM L59

  • GM LM7

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM L96

  • GM LQ4

  • GM LH8

  • GM LH9

  • GM LH8

  • GM LH9

  • GM LS1

  • GM LS1

  • GM LS2

Customer Impersonation Script