FAST LSXr 102mm MANIFOLD - HIGH HP - LS3 - 146103B
FAST LSXr MANIFOLD, MID RANGE HIGH HP, LS3 ASSEMBLY, 146103B
LSXR 102mm High HP Rectangle Port LS3 / LS9 / L76 / L92 / L99 / LSA Intake Manifold
FAST engineers teamed up with airflow specialists at Racing Head Service to develop polymer intake manifolds for GM LS engines. The 102mm intake manifolds feature a revolutionary new modular design that allows for fast and easy disassembly and the ability to remove runners for porting. Constructed from the same advanced polymer material as the original 92mm manifold, the LSXR offers many benefits over aluminum aftermarket intakes, including lighter weight, increased strength, and improved heat dissipation.
Due to a patented removable runner design and the introduction of two additional runner sets, LSXR 102mm Intake Manifolds from FAST now have the capability to shift torque and horsepower gains to a higher RPM than the original version, making them the most flexible options on the market. In addition to the original FAST LSXR 102mm Intake Manifold & Runner Set, High HP and Race versions are now available. The new interchangeable, complementing runners are designed specifically for LS3, L99, L76, and L92* engines that are built for high-performance applications. The High HP Runner Set is based on Daytona Prototype intakes and utilizes newly designed runners, which are shorter and straighter than conventional versions.
The High HP version has been proven to make 8-10 horsepower over the original LSXR manifold with a 500-1000 RPM shift up in peak horsepower on LS3 performance engines. However, it maintains all of the same features and benefits as the standard LSXR version. The Race Runner Set features a short and straight runner design that rivals aluminum four-barrel intakes on horsepower potential. This manifold setup utilizes a race version of standard runners designed for all-out high RPM performance. It is ideal for race vehicles with serious performance modifications and race converters. The Race version provides a 15-30 horsepower gain with a 1000-2000 RPM shift up in peak horsepower but will lose some low-end torque. The runners are interchangeable and available in kits so manifolds may be configured like the original LSXR with standard street runners, or the new HP or Race models. A master kit is also available featuring an intake manifold assembly and all three runner options. *L92 requires engine accessory modifications.
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