Product Description:

LSXHR 103mm Intake Manifold for Rectangular Port LS3

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.

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.

Lightweight and strong polymer construction
Virtually eliminates heat soak
Average 30 HP gain over competitor tunnel ram manifolds
Rated for up to 45psi of boost pressure
Forward- or firewall-facing throttle body installation
Available for rectangular LS3 and raised port LS7 engines

Additional Information:

Associated Comments: See 146204 for LS7 manifold.

C.A.R.B. EO Number: N/A
C.A.R.B. Exempt?: No
Title: LSXHR 103mm Intake Manifold for Rectangular Port LS3

Guaranteed Fitments:

2007-2009 Chevrolet Avalanche
2007-2009 Chevrolet Suburban 1500
2007-2013 Cadillac Escalade EXT
2007-2013 Chevrolet Silverado 1500
2007-2013 GMC Sierra 1500
2007-2014 GMC Yukon
2007-2014 GMC Yukon XL 1500
2007-2016 Cadillac Escalade
2007-2016 Cadillac Escalade ESV
2008-2009 Chevrolet Tahoe
2008-2009 Hummer H2
2008-2009 Pontiac G8
2008-2013 Chevrolet Corvette
2008-2016 GMC Sierra
2010-2015 Chevrolet Camaro
2014-2017 Chevrolet SS