FAST 146602 Lsxrt Intake Manifold 102MM 4.8L 5.3L 6.0L

( Brand: Fast ), ( Part Type: Intake Manifold ), ( Manufacturer Part Number: 146602 )

Review FAST Lsxrt 102mm Intake Manifold Chevrolet Gmc 4.8l 5.3l 6.0l Trucks

The 146602 LSXRT 102mm Intake Manifold is a high-performance aftermarket component designed to enhance the airflow and combustion efficiency of Chevrolet and GMC engines powered by 4.8L, 5.3L, and 6.0L displacement sizes. This intake manifold, manufactured by Holley, is a direct replacement for the stock intake and is suitable for both stock and modified applications.

This intake manifold features a large, 102mm runner design that increases the velocity of the incoming air charge, allowing more air to enter the engine during each intake stroke. The runners are precision-machined and CNC-ported to ensure optimal flow and minimal turbulence. The manifold's runners are also designed with a long, straight, and smooth path from the throttle body to the cylinder heads, reducing restriction and providing maximum power potential.

The intake manifold is constructed from high-strength aluminum alloy, which offers excellent heat dissipation properties and durability. It also includes a 6-bolt boss pattern and integrally cast spacer plates to allow for easy adaptation to various engine configurations. The gasket surfaces are CNC-machined to ensure a perfect seal and the intake manifold comes with a new gasket for installation.

The Holley 146602 LSXRT 102mm Intake Manifold is designed to work seamlessly with Holley's line of high-flowing, fully-adjustable EFI systems, including the Dominator, HP, and Ultra HP systems. It is also compatible with various throttle body sizes and can be used with stock or aftermarket fuel systems.

This intake manifold is a must-have for any enthusiast looking to increase power and improve the overall performance of their Chevrolet or GMC engine. It is a direct replacement for the factory intake manifold and offers a straightforward installation process. With its large runner design, high-strength construction, and compatibility with various EFI systems, the Holley 146602 LSXRT 102mm Intake Manifold is a top choice among performance enthusiasts.

Buying a 146602 LSX RT 102mm intake manifold for Chevrolet or GMC vehicles with 4.8L, 5.3L, or 6.0L engines can offer several potential benefits and drawbacks. Here's a detailed analysis:

1. Improved Airflow: The 102mm intake manifold increases the airflow into the engine, allowing for more fuel to be burned, which results in increased horsepower and torque.

2. Enhanced Engine Performance: The intake manifold upgrade can lead to improved throttle response, better idling, and increased power throughout the RPM range.

3. Customization: This intake manifold is a popular choice among performance enthusiasts and hot rod builders, as it offers a more customizable option for engine tuning and modification.

1. Complex Installation: Installing the 146602 LSX RT intake manifold can be a complex process, requiring extensive knowledge of engine systems and the use of specialized tools.

2. Cost: The intake manifold itself can be expensive, and the cost of installation, tuning, and additional parts (such as new fuel injectors or throttle body) can add up.

3. Potential Compatibility Issues: The intake manifold may not be compatible with all stock or aftermarket engine components, requiring additional testing and adjustments.

The decision to buy a 146602 LSX RT 102mm intake manifold for a Chevrolet or GMC vehicle with a 4.8L, 5.3L, or 6.0L engine depends on the specific goals and resources of the vehicle owner. If the primary objective is to significantly enhance engine performance and power, this intake manifold may be a worthwhile investment, despite the complex installation process and potential costs. However, those with limited resources or less experience with engine modification may want to consider other, less complex options for improving engine performance.

If you're considering purchasing a 146602 LSX RT 102mm intake manifold, it's crucial to thoroughly research the installation process and compatibility with your specific engine configuration. Consulting with experienced mechanics or performance specialists can help you determine if this intake manifold is the right choice for your vehicle and goals. Additionally, carefully weighing the potential benefits and drawbacks, as well as the associated costs, is essential to making an informed decision.

Details:

Details from the manufacturer: FAST LSXRT intake manifolds are designed specifically for GM truck engines 4.8L, 5.3L, and 6.0L LS1, LS2, LS6 race applications where hood clearance is not a concern. While they feature a 102mm air inlet that was designed for the FAST Big Mouth throttle body, can also be used with stock 90mm or aftermarket 92mm bodies 78mm three-bolt require an adapter. Other features include integrated notorious bungs and precise bolt-on fit that permits the use of factory accessories OEM fuel/emission connections without adjustments or clearance issues. Similar to the LSXR 102mm intake manifold for cars, LSXRT features ability remove individual runners modification.

FAST LSXRT 102mm intake manifolds follow the path chartered by original LSX Gen III intakes featuring a modular design that allows for easy porting and disassembly runner yields an incredible 25 peak horsepower gain over stock on 6.0L engine with Big Mouth throttle body. SHIPPING IS FREE in the continental US. Lsxrt are constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity.

part #: 146602 prices

• $1269.95-$1473.24

specifications inputmanifolds:

• for makes: Chevrolet, Gmc
• brand: Fast
• part type: Intake Manifold
• manufacturer part number: 146602

shipping inputmanifolds:

• class: Standard
• service: UPS Ground
• transit: 2-6 Days
• type: Fixed
• cost: $0.00
• carrier: UPS

seller inputmanifolds:

• # reviews: 4668
• city: Mount Laurel, New Jersey
• rating: 100.0%

payments inputmanifolds:

• other
• wallet: Apple-pay
• credit card: Discover

returns inputmanifolds:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

offer inputmanifolds:

• sold: 0
• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: September 17, 2025

general inputmanifolds:

• condition: New
• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds

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