FAST 102mm LSXR/LSXRT LS Car/Truck Intake & 92mm/102mmThrottle Body Package
Brand New FAST Intake Manifold & Throttle Body Package. Includes 102mm LSXR (Car) or LSXRT (Truck)™ Polymer Intake Manifold for GM LS-Based V8 Engines, along with a FAST 92mm or 102mm Cable Drive Throttle Body. Please see product descriptions & part #'s below to aid in selecting the proper kit for your application.
Product Representations: Actual parts may vary based on configuration ordered.
FAST LSXR 102mm Intake Manifold (Car):
Cathedral Port LS1/LS2/LS6: Part #146302B
Rectangle Port LS3/L76/L99: Part #146102B
Rectangle Port LS7: Part #146202B
FAST™ engineers teamed up with airflow specialists at RHS® to develop polymer intake manifolds for GM LS based engines. Testing on a near stock LS7 engine with a Big Mouth 102mm Throttle Body™ produced gains of 16+ horsepower, and 26+ rear wheel horsepower on a 500c.i. engine. The LSXR™ 102mm Intake Manifold features a revolutionary new modular design that allows fast and easy disassembly and features the ability to remove individual runners for porting.
Constructed from the same advanced polymer material as the original FAST™ LSX™ 92mm Intake Manifold, the LSXR™ offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat dissipating characteristics. While the LSXR™ features a 102mm air inlet that is perfectly suited to the FAST™ Big Mouth 102mm Throttle Body™. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows the use of factory accessories without modification or clearance concerns.
FAST LSXRT 102mm Intake Manifold (Truck):
Cathedral Port 4.8L/5.3L/6.0L Truck Engines: Part #146602B
Designed specifically for GM 4.8/5.3/6.0L cathedral port cylinder head-equipped truck engines and cathedral port LS1, -2, -6 applications where hood clearance is not a concern, the FAST™ LSXRT™102mm Intake Manifold follows the path chartered by the original FAST ™ LSX™ Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body™. Extensive testing led to a runner design that is longer and less restrictive and gives the user the ability to remove individual runners from the manifold for modification.
The LSXRT™ is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST™ Big Mouth 102mm Throttle Body™, it can also be used with OEM electronic 78/90mm or aftermarket 90/92mm throttle bodies (three-bolt electronic throttle bodies require an adapter). Other features include integrated nitrous bungs and a precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues.
FAST GM LS 92mm Big Mouth LT Cable Drive Throttle Body:
92mm Cable Drive WITHOUT IAC or TPS: Part #54090
92mm Cable Drive WITH IAC or TPS: Part #54091
Cost-Effective, but Stylish Alternative to CNC Billet Big Mouth Throttle Bodies™
Big Mouth LT Throttle Bodies™ from FAST™ are a perfect choice for a variety of GM LS applications. Features black-wrinkle powder coating and all of the same features as FAST™ billet throttle bodies. The enlarged bore is a substantial upgrade over stock and allows increased airflow to support higher horsepower. A progressive throttle pulley enhances drivability, especially at low throttle, while a double return spring provides a solid feel and increased safety. A drive-by-cable throttle body (FAST™ Big Mouth/Big Mouth LT) is necessary for XFI™ and EZ-EFI® (or other aftermarket EFI customers) running an engine that was originally throttle-by-wire. Available with or without GM-style IAC and TPS.
92mm 4-bolt drive-by-cable GM LS throttle body
Black-wrinkle powder coating & all of the same functions as billet throttle bodies
Works excellently with LSX™ & LSXR™ intake manifolds as well as OEM 90mm intake manifolds
Drive-by-cable throttle bodies are necessary for XFI™ & EZ-EFI® running an engine that was originally throttle-by-wire
Enlarged bore is a substantial upgrade over stock & allows increased airflow to support higher horsepower
Progressive throttle pulley enhances drivability, especially at low throttle
Double return spring provides a solid feel & increased safety
Available with GM-style IAC & TPS (Shown above, Part #54091) or without (Part #54090)
FAST GM LS Big Mouth 92mm/102mm BILLET Cable Drive Throttle Bodies (102mm model shown below):
92mm Cable Drive WITHOUT IAC or TPS: Part #54092
92mm Cable Drive WITH IAC or TPS: Part #54095
102mm Cable Drive WITHOUT IAC or TPS: Part #54102
102mm Cable Drive WITH IAC or TPS: Part #54103
CNC Billet Construction & up to 102mm for Increased Airflow
When it comes to improving your engine’s performance, increased airflow is a key ingredient. The FAST™ 92mm & 102mm Big Mouth Throttle Bodies™ for the FAST™ LSX™ 92mm and LSXR™ 102mm Intake Manifolds increase airflow through a series of innovative design changes and a slightly enlarged throttle opening. FAST™ also invested significant testing & engineering resources into optimizing cross-sectional flow and eliminating airflow turbulence, especially at part throttle operation.
In addition, these throttle bodies offer increased throttle blade thickness to eliminate deflection commonly found with other throttle bodies, especially those in boosted applications. A smoother operating offset blade pivot improves throttle response, and a beefed up linkage and dual throttle spring mechanism ensure total throttle control. The FAST™ Big Mouth 92mm & 102mm Throttle Bodies™ will deliver bolt-on GM Gen III (LS1, -2 & -6) horsepower while the LSXR™ is designed to maximize potential performance upgrades on L92/LS3/LS7 engines. Available with or without GM-style IAC and TPS on both 92mm and 102mm models.