Fast LSXRT 102mm Intake Manifold Chevy LS1 Truck 146602B

This FAST Intake Manifold is engineered 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.

1999-2007 GM Truck and SUV 3 Bolt Cable Throttle Body / 2007-2010 GM Truck and SUV 4 Bolt Electronic Throttle Body

Designed for use with FAST 102mm Big Mouth Throttle Body

102mm inlet also works with OEM electronic 78-90mm or aftermarket 90/92mm throttle bodies for high flow and minimal restriction (three bolt electronic throttle bodies require an adapter)

Advanced polymer material is strong, lightweight, and cools intake charge for enhanced power

Big gains in rear wheel HP yet retains factory fitments and under hood clearance requirements