FAST LSX Manifold 103MM Gen III LS Rect Port for Chevrolet and GMC Vehicles

FAST has developed the industry’s first polymer tunnel ram-style intake manifold, ideal for generating maximum power in boosted and naturally aspirated engines. Available for rectangular port LS3 and raised rectangular port LS7 engines, the FAST LSXHR FAST-RAM Intake Manifold features removable stacks of various lengths, so racers can experiment with finding which combination makes the most power in their application. Its polymer construction is not only lightweight and high strength, but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds. Testing has shown an average 30-horsepower gain between 5,000 and 7,500 RPM over competitor tunnel ram intake manifolds. The FAST LSXHR FAST-RAM Intake Manifold is designed specifically with boosted applications in mind and is rated for up to 45psi of continuous pressure. Compound fuel injector angle aims the spray pattern for ideal atomization, resulting in maximum power production and superior drivability. A reversible top allows for forward- or firewall-facing throttle body installations. The intake manifold also features two nitrous nozzle bosses per runner for clean and easy direct port system installations. Its 103mm throttle body opening can be port matched to 105mm. Designed for boosted and N/A LS3 engines, the LSXHR 103mm intake is not only rated for 45 PSI of pressure, but also eliminates heat soak thanks to its advanced polymer construction. Gains 30 HP on average over competitors' aluminum intakes. See 146204 for LS7 manifold.

The FAST LSX Manifold 103MM Gen III LS Rect Port is engineered to maximize power output in both boosted and naturally aspirated LS3 engines. Crafted from lightweight yet durable polymer, this intake manifold effectively minimizes heat soak, a common issue with aluminum manifolds, ensuring consistent performance during high-demand driving conditions. Its design features removable stacks of varying lengths, allowing racers and enthusiasts to fine-tune intake airflow for optimal horsepower gains. Testing indicates an average increase of 30 horsepower within the 5,000 to 7,500 RPM range compared to traditional tunnel ram-style intakes, making it an ideal upgrade for performance applications. Rated for up to 45 PSI of continuous pressure, this manifold is built to handle forced induction setups with confidence. The compound fuel injector angle enhances spray pattern efficiency, promoting superior atomization, maximum power, and improved throttle response.
The reversible top design offers flexible installation options, allowing for forward- or firewall-facing throttle body configurations. Additionally, the manifold features two nitrous nozzle bosses per runner for straightforward direct port nitrous system integration. The 103mm throttle body opening can be port-matched to 105mm for enhanced airflow capacity. Designed specifically for 2007 Chevrolet Silverado, Suburban, Avalanche, GMC Yukon, and Yukon XL models equipped with Gen III LS engines, this manifold is a versatile upgrade that delivers significant horsepower gains. Its advanced polymer construction ensures high strength without the heat soak issues associated with aluminum counterparts, providing reliable and consistent performance on the track or street. Whether upgrading a naturally aspirated setup or boosting an existing engine, the FAST LSX Manifold offers a combination of innovative features and proven performance enhancements to meet demanding automotive applications.

Features:

• Polymer construction: lightweight, high strength, virtually eliminates heat soak

• Removable stacks: various lengths for customizable airflow tuning

• Rated for up to 45 PSI of continuous pressure: ideal for boosted applications

• Compound fuel injector angle: promotes optimal spray pattern and atomization

• Reversible top: allows forward- or firewall-facing throttle body installation

• Two nitrous nozzle bosses per runner: facilitates direct port nitrous systems

• Port-matched throttle opening: 105mm for increased airflow capacity

Fitment:
2007 Cadillac Escalade Base
2007 Cadillac Escalade ESV Base
2007 Cadillac Escalade EXT Base
2007 Chevrolet Avalanche LT
2007 Chevrolet Avalanche LTZ
2007 Chevrolet Silverado 1500 LT
2007 Chevrolet Silverado 1500 LTZ
2007 Chevrolet Suburban 1500 LT
2007 Chevrolet Suburban 1500 LTZ
2007 GMC Sierra 1500 Denali
2007 GMC Sierra 1500 SLE
2007 GMC Sierra 1500 SLT
2007 GMC Yukon Denali
2007 GMC Yukon XL 1500 Denali
2007 GMC Yukon XL 1500 SLE
2007 GMC Yukon XL 1500 SLT
2008 Cadillac Escalade Base
2008 Cadillac Escalade Platinum
2008 Cadillac Escalade ESV Base
2008 Cadillac Escalade ESV Platinum
2008 Cadillac Escalade EXT Base
2008 Chevrolet Avalanche LT
2008 Chevrolet Avalanche LTZ
2008 Chevrolet Corvette Base
2008 Chevrolet Silverado 1500 LT
2008 Chevrolet Silverado 1500 LTZ
2008 Chevrolet Suburban 1500 LT
2008 Chevrolet Suburban 1500 LTZ
2008 Chevrolet Tahoe LTZ
2008 GMC Sierra 1500 Denali
2008 GMC Sierra 1500 SLE
2008 GMC Sierra 1500 SLT
2008 GMC Yukon Denali
2008 GMC Yukon XL 1500 Denali
2008 GMC Yukon XL 1500 SLE
2008 GMC Yukon XL 1500 SLT
2008 Hummer H2 Base
2008 Pontiac G8 GT
2009 Cadillac Escalade Base
2009 Cadillac Escalade Platinum
2009 Cadillac Escalade ESV Base
2009 Cadillac Escalade ESV Platinum
2009 Cadillac Escalade EXT Base
2009 Chevrolet Avalanche LT
2009 Chevrolet Avalanche LTZ
2009 Chevrolet Corvette Base
2009 Chevrolet Silverado 1500 LT
2009 Chevrolet Silverado 1500 LTZ
2009 Chevrolet Suburban 1500 LT
2009 Chevrolet Suburban 1500 LTZ
2009 Chevrolet Tahoe LTZ
2009 GMC Sierra 1500 Denali
2009 GMC Sierra 1500 SLE
2009 GMC Sierra 1500 SLT
2009 GMC Yukon Denali
2009 GMC Yukon XL 1500 Denali
2009 GMC Yukon XL 1500 SLE
2009 GMC Yukon XL 1500 SLT
2009 Hummer H2 Base
2009 Pontiac G8 GT
2009 Pontiac G8 GXP
2010 Cadillac Escalade Base
2010 Cadillac Escalade Platinum
2010 Cadillac Escalade ESV Base
2010 Cadillac Escalade ESV Platinum
2010 Cadillac Escalade EXT Base
2010 Chevrolet Camaro SS
2010 Chevrolet Corvette Base
2010 Chevrolet Corvette Grand Sport
2010 Chevrolet Silverado 1500 LT
2010 Chevrolet Silverado 1500 LTZ
2010 GMC Sierra 1500 Denali
2010 GMC Sierra 1500 SLE
2010 GMC Sierra 1500 SLT
2010 GMC Yukon Denali
2010 GMC Yukon XL 1500 Denali
2010 GMC Yukon XL 1500 SLT
2011 Cadillac Escalade Base
2011 Cadillac Escalade Luxury
2011 Cadillac Escalade Platinum
2011 Cadillac Escalade Premium
2011 Cadillac Escalade ESV Base
2011 Cadillac Escalade ESV Luxury
2011 Cadillac Escalade ESV Platinum
2011 Cadillac Escalade ESV Premium
2011 Cadillac Escalade EXT Base
2011 Cadillac Escalade EXT Luxury
2011 Cadillac Escalade EXT Premium
2011 Chevrolet Camaro SS
2011 Chevrolet Corvette Base
2011 Chevrolet Corvette Grand Sport
2011 Chevrolet Silverado 1500 LT
2011 Chevrolet Silverado 1500 LTZ
2011 GMC Sierra 1500 Denali
2011 GMC Sierra 1500 SLE
2011 GMC Sierra 1500 SLT
2011 GMC Yukon Denali
2011 GMC Yukon XL 1500 Denali
2011 GMC Yukon XL 1500 SLT
2012 Cadillac Escalade Base
2012 Cadillac Escalade Luxury
2012 Cadillac Escalade Platinum
2012 Cadillac Escalade Premium
2012 Cadillac Escalade ESV Base
2012 Cadillac Escalade ESV Luxury
2012 Cadillac Escalade ESV Platinum
2012 Cadillac Escalade ESV Premium
2012 Cadillac Escalade EXT Base
2012 Cadillac Escalade EXT Luxury
2012 Cadillac Escalade EXT Premium
2012 Chevrolet Camaro SS
2012 Chevrolet Corvette Base
2012 Chevrolet Corvette Grand Sport
2012 Chevrolet Silverado 1500 LT
2012 Chevrolet Silverado 1500 LTZ
2012 GMC Sierra 1500 Denali
2012 GMC Sierra 1500 SLE
2012 GMC Sierra 1500 SLT
2012 GMC Yukon Denali
2012 GMC Yukon XL 1500 Denali
2012 GMC Yukon XL 1500 SLT
2013 Cadillac Escalade Base
2013 Cadillac Escalade Luxury
2013 Cadillac Escalade Platinum
2013 Cadillac Escalade Premium
2013 Cadillac Escalade ESV Base
2013 Cadillac Escalade ESV Luxury
2013 Cadillac Escalade ESV Platinum
2013 Cadillac Escalade ESV Premium
2013 Cadillac Escalade EXT Base
2013 Cadillac Escalade EXT Luxury
2013 Cadillac Escalade EXT Premium
2013 Chevrolet Camaro SS
2013 Chevrolet Corvette Base
2013 Chevrolet Corvette Grand Sport
2013 Chevrolet Silverado 1500 LT
2013 Chevrolet Silverado 1500 LTZ
2013 GMC Sierra 1500 Denali
2013 GMC Sierra 1500 SLE
2013 GMC Sierra 1500 SLT
2013 GMC Yukon Denali
2013 GMC Yukon XL 1500 Denali
2014 Cadillac Escalade Base
2014 Cadillac Escalade Luxury
2014 Cadillac Escalade Platinum
2014 Cadillac Escalade Premium
2014 Cadillac Escalade ESV Base
2014 Cadillac Escalade ESV Luxury
2014 Cadillac Escalade ESV Platinum
2014 Cadillac Escalade ESV Premium
2014 Chevrolet Camaro SS
2014 Chevrolet SS Base
2014 GMC Yukon Denali
2014 GMC Yukon XL 1500 Denali
2014 GMC Yukon XL 1500 SLT
2015 Chevrolet Camaro SS
2015 Chevrolet SS Base
2016 Chevrolet SS Base
2017 Chevrolet SS Base

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1