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FAST LSX Manifold 103MM Gen III LS Rect Port - Black
FAST LSX Manifold 103MM Gen III LS Rect Port - Black
SKU:146106
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The FAST LSX Manifold 103MM Gen III LS Rect Port is a high-performance intake manifold designed to maximize power output for boosted and naturally aspirated engines. Crafted from lightweight, high-strength polymer, it features a tunnel ram-style design that virtually eliminates heat soak common with aluminum manifolds. The manifold includes removable stacks of various lengths, allowing racers to fine-tune their setup for optimal horsepower gains. Rated for up to 45psi of continuous pressure, it enhances power production and drivability through optimized fuel injector angles and a 103mm throttle body opening that can be port matched to 105mm. Its construction and design focus on delivering maximum performance in demanding applications.
This intake manifold is compatible with 2010–2015 LS3 and LS7 engines with rectangular port and raised rectangular port configurations. It is intended for racing, high-performance street, and track use, providing a bolt-on upgrade for boosted or naturally aspirated setups. The design accommodates forward- or firewall-facing throttle body installations with a reversible top and includes two nitrous nozzle bosses per runner for direct port systems. Installation is straightforward as a direct replacement for stock manifolds on compatible Gen III LS engines, making it ideal for enthusiasts seeking maximum power and flexibility in their engine builds.
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Overview
Overview
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.