Designed specifically for GM 4.8/5.3/6.0L cathedral port truck engines and cathedral port LS1, -2, -6 race 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™. And similar to the LSXR™ 102mm Intake Manifold for cars, the LSXRT™ features the ability to remove individual runners 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 stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST™ 92mm or 102mm throttle body.
Notes: Designed for use with Big Mouth 102mm throttle body but can also be used with stock 90mm or 92mm throttle bodies. 78mm three-bolt throttle bodies require an adapter. May require a taller hood.
*This intake manifold is 50 State Legal CARB EO# D-279-10
Features:
Black version of original LSXRT intake w/ 102mm opening & added refinements
Includes stainless steel bolts, threaded insert throttle body mounts & mounting hardware
Incorporates high-quality polymer materials, which resist “heat sink” effect of aluminum
Maximizes potential of other popular engine performance upgrades such as cylinder heads
Improved throttle body sealing flange & o-ring gasket
50 state legal under C.A.R.B. E.O. #D-279-10
Specs:
Cylinder Head Configuration: LS1/LS2/LS6 (Cathedral Port)
Fuel Injection Style: Multi-port
Basic Operating RPM Range: 1,800-6,000
Throttle Body Bore Size: 102mm
