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LSXRT™ 102mm Truck Intake Manifold (Cathedral Port Heads)

Part Number: 146602B
$1,037.44

Availability: In stock

Code: 146602B

Shipping Weight: 18.40

Quick Overview

Now in Black!


25 HP Bolt-On Gains for '99+ GM Trucks/SUV's w/ Cathedral Port Heads

LSXRT™ 102mm Truck Intake Manifold (Cathedral port heads)

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Description

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LSXRT

Injection Molded Polymer Intake
Cathedral-Port Head Equipped Applications

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.

  • 25 HP gain when used w/ 102mm Big Mouth Throttle Body™ on a stock 6.0L truck engine

  • Constructed from proprietary precision injection molded polymer;  Lighter than aluminum w/ lower heat soak propensity & greater strength over stock molded intake

  • Innovative multi-layer design w/ removable runners for quick & easy disassembly & porting

  • Integrated nitrous bungs; plug-and-play w/ ZEX™ LSX™ Direct Port Nitrous System

  • Patented Design - U.S. Patent No 8,567,366
     

50-State Legal CARB EO #D-279-9 Throttle Body / Fuel Rail Type
‘99-‘02 Silverado/Sierra 4.8/5.3/6.0L 3-Bolt, Cable Throttle Body / Round Plastic Fuel Rails
‘02-‘06 Silverado/Sierra 4.8/5.3/6.0L 3-Bolt, Electronic Throttle Body / Round Plastic Fuel Rails
‘07 Silverado/Sierra (“Classic”) 4.8/5.3/6.0L 3-Bolt, Eletronic Throttle Body / Round Plastic Fuel Rails
’07-‘13 Silverado/Sierra 4.8/5.3L 4-Bolt, Eletronic Throttle Body / Square Metal Fuel Rails
’00-’02 Tahoe/Yukon/Suburban 4.8/5.3/6.0L 3-Bolt, Cable Throttle Body / Round Plastic Fuel Rails
’02-’06 Tahoe/Yukon/Suburban 4.8/5.3/6.0L 3-Bolt, Electronic Throttle Body / Round Plastic Fuel Rails
’06-’09 Trailblazer SS1 LS2 (6.0L) 4-Bolt, Electronic Throttle Body / Square Metal Fuel Rails
’07-’14 Tahoe/Yukon/Suburban 4.8/5.3/6.0L 4-Bolt, Electronic Throttle Body / Square Metal Fuel Rails
 *Drive-by-wire = Electronic Throttle Body  /  Drive-by-cable = Mechanical/Cable Throttle Body


APPLICABLE THROTTLE BODIES

APPLICABLE FUEL RAILS

 

1. Chevy Trailblazer SS requires some cowl modifications.
2. FAST™ throttle body requires GM purge solenoid #12581282 (Not sold by FAST™)
3. Drive-by-wire applications must re-use OEM throttle body or purchase aftermarket drive-by-wire throttle body.
4. Fuel line adaptor(s) required to connect to OEM fuel line(s).