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

#28981631

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

Carbon Fiber
Hardware Included
Sold as Each

$2,199.95

/each

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Product Summary

Single Plane | Low Rise Intake Manifold Type

Carbon Fiber
Hardware Included
Sold as Each

See more details

Key Specs

MFG. Part #	28981631
Brand	Speedway Motors
Intake Manifold Type	Single Plane \| Low Rise
RPM Range	1,500-9,000
Material Type	Carbon Fiber

See more specs

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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 WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Speedway Motors 28981631 Specifications

KEY SPECS
MFG. Part #	28981631
Brand	Speedway Motors
Intake Manifold Type	Single Plane \| Low Rise
RPM Range	1,500-9,000
Material Type	Carbon Fiber

GENERAL
Hardware Included	Yes
Sold in Quantity	Each

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Fitment

2004 Buick Rainier

GM LM4

2004-2005 Cadillac CTS

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2006-2007 Cadillac CTS

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2002-2011 Cadillac Escalade

GM LM7
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2003-2006 Cadillac Escalade ESV

GM LM7
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2002-2006 Cadillac Escalade EXT

GM LM7
GM LQ9

2007-2011 Chevy Avalanche

GM L76
GM LC9
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GM LY5

2012-2013 Chevy Avalanche

GM LY5

2002-2006 Chevy Avalanche 1500

GM LM7

2000-2002 Chevy C1500

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GM LQ4

1998-2002 Chevy Camaro

GM LS1

1997-2000 Chevy Corvette

GM LS1

2001-2004 Chevy Corvette

GM LS1
GM LS6

2005-2007 Chevy Corvette

GM LS2

2006-2009 Chevy Impala

GM LS4

2006-2007 Chevy Monte Carlo

GM LS4

1999 Chevy Silverado 1500

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GM LM7

2000-2011 Chevy Silverado 1500

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2012-2014 Chevy Silverado 1500

4.8 Chevy LS V8
GM LM7

2007 Chevy Silverado 1500 Classic

GM LQ4

2001-2003 Chevy Silverado 1500 HD

GM LQ4

2005-2006 Chevy Silverado 1500 HD

GM LQ4

2007 Chevy Silverado 1500 HD

GM LQ9

2007 Chevy Silverado 1500 HD Classic

GM LQ4

2019 Chevy Silverado 1500 LD

GM L98

2000-2004 Chevy Silverado 2500

GM LM7
GM LQ4

2005 Chevy Silverado 2500

GM L98
GM LQ9

2006-2014 Chevy Silverado 2500

GM L98

2001-2011 Chevy Silverado 2500 HD

GM LQ4

2012-2014 Chevy Silverado 2500 HD

GM L98

2007 Chevy Silverado 2500 HD Classic

GM LQ4

2001-2006 Chevy Silverado 3500

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2007-2013 Chevy Silverado 3500

GM L98

2015-2018 Chevy Silverado 3500

GM L98

2007 Chevy Silverado 3500 Classic

GM LQ4

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GM LZ1

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GM LM4

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GM LM7

2002-2006 Chevy Suburban 1500

GM L59
GM LM7

2007-2009 Chevy Suburban 1500

GM LC9
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GM LY5

2010-2011 Chevy Suburban 1500

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2012-2014 Chevy Suburban 1500

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GM L96

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2007 Chevy Tahoe

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GM LMG
GM LY5

2008-2011 Chevy Tahoe

GM LC9
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GM LZ1

2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2006-2009 Chevy Trailblazer

GM LS2

2002-2009 GMC Envoy

GM LM4

2002-2006 GMC Envoy XL

GM LM4

2004-2005 GMC Envoy XUV

GM LM4

2001-2005 GMC Savana 1500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM LM7
GM LQ4

2007-2014 GMC Savana 1500

4.8 Chevy LS V8
GM L33
GM LQ4

2001-2005 GMC Savana 2500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 2500

4.8 Chevy LS V8
GM L33
GM LQ4

2002-2005 GMC Savana 3500

4.8 Chevy LS V8
GM LM7
GM LQ4

2006-2013 GMC Savana 3500

4.8 Chevy LS V8
GM L33
GM LQ4

1999-2011 GMC Sierra 1500

GM L20
GM LC9
GM LMG
GM LZ1

2007 GMC Sierra 1500 Classic

GM L33
GM L59
GM LM7

2001-2003 GMC Sierra 1500 HD

GM LQ4

2005-2006 GMC Sierra 1500 HD

GM LQ4

2007 GMC Sierra 1500 HD Classic

GM LQ4

1999-2001 GMC Sierra 2500

GM LM7
GM LQ4

2002-2004 GMC Sierra 2500

GM LQ4

2001-2011 GMC Sierra 2500 HD

GM LQ4

2015-2019 GMC Sierra 2500 HD

GM L96

2007 GMC Sierra 2500 HD Classic

GM LQ4

2001-2006 GMC Sierra 3500

GM LQ4

2007 GMC Sierra 3500

GM L96

2007 GMC Sierra 3500 Classic

GM LQ4

2007-2011 GMC Sierra 3500 HD

GM L96

2015-2019 GMC Sierra 3500 HD

GM L96

2001 GMC Sierra C3

GM LQ4

2000-2007 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2008-2011 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2
GM LZ1

2012-2013 GMC Yukon

GM LC9
GM LMG
GM LZ1

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM L59
GM LM7
GM LQ4

2012-2014 GMC Yukon XL 1500

GM L96

2000-2011 GMC Yukon XL 2500

GM LQ4

2012-2013 GMC Yukon XL 2500

GM L96

2003-2007 Hummer H2

GM LQ4

2008-2009 Hummer H3

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2010 Hummer H3

GM LH9

2009 Hummer H3T

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2010 Hummer H3T

GM LH9

1998-2002 Pontiac Firebird

GM LS1

2004 Pontiac GTO

GM LS1

2005-2006 Pontiac GTO

GM LS2