EDELBROCK FST-54039B Lsx Intake Manifold Big Mouth Cathedral 92MM LS1/LS2/LS6

( Brand: Edelbrock ), ( Part Type: Intake Manifold ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Performance/custom ), ( Manufacturer Part Number: FST-54039B ), ( Mounting Hardware Included: Yes ), ( Material: Aluminum ), ( Country/region Of Manufacture: United States )

Review EDELBROCK In Stock Fast Lsx 92mm Intake Manifold Big Mouth Chevy Ls1/ls2/ls6 Cathedral fits LS1 LS2 LS6

The Edelbrock FST-54039B LSX 92mm Intake Manifold, also known as the "Big Mouth" intake manifold, is a high-performance aftermarket intake solution designed specifically for Chevrolet LS1, LS2, and LS6 engines. This intake manifold is an essential upgrade for enthusiasts looking to enhance the power and performance of their LS-based engines.

This intake manifold features a modern, 92mm (3.622-inch) runner design that provides improved airflow and throttle response compared to the stock intake manifold. The larger runners allow for a more efficient intake charge, which translates to increased horsepower and torque. The Big Mouth intake manifold is also compatible with various fuel systems, including EFI and carbureted applications.

One of the most notable features of the FST-54039B intake manifold is its unique, cathedral-ported design. This design provides larger, smoother, and more uniform airflow into the engine, which can lead to better combustion and improved engine efficiency. The cathedral-ported design also helps to reduce turbulence, which can lead to more consistent power delivery across the entire RPM range.

The intake manifold is made from high-quality, durable materials, including aluminum and steel, ensuring that it can withstand the rigors of high-performance use. The manifold comes with a gasket, bolts, and hardware necessary for installation, making it a complete, bolt-on solution.

Additionally, the Big Mouth intake manifold is designed to work seamlessly with various aftermarket components, such as high-performance cylinder heads, camshafts, and superchargers. This flexibility makes it an excellent choice for those looking to customize their LS engine for maximum power and performance.

In summary, the Edelbrock FST-54039B LSX 92mm Intake Manifold is an excellent upgrade for anyone looking to improve the power and performance of their Chevrolet LS1, LS2, or LS6 engine. Its unique cathedral-ported design, larger runners, and compatibility with various fuel systems make it a versatile and powerful solution for serious enthusiasts.

Edelbrock FST-54039B LSX 92mm Intake Manifold (Big Mouth for Chevy LS1/LS2/LS6 Cathedral) is a performance intake manifold designed to deliver increased airflow and power for your Chevy LS engine. Here are some pros and cons that may help you in making an informed decision about purchasing this intake manifold.

1. Enhanced Airflow: The 92mm runners of this intake manifold provide a significant increase in airflow compared to the factory intake manifold. This results in more power and better engine performance.

2. Improved Throttle Response: With the larger runners, this intake manifold delivers improved throttle response, making your engine more responsive and quicker.

3. Better Fuel Mixture: The Big Mouth design of this intake manifold ensures a better fuel mixture, ensuring a more efficient combustion process and improved performance.

4. Easy Installation: The intake manifold comes with a gasket and all necessary hardware for installation, making it a relatively easy and straightforward process.

5. Durable Construction: The intake manifold is made from high-quality aluminum and features robust construction to ensure long-lasting performance.

1. Cost: The Edelbrock FST-54039B LSX 92mm Intake Manifold is a premium aftermarket product and comes with a higher price tag compared to the factory intake manifold.

2. Requires Tuning: Installing this intake manifold may require additional tuning to ensure optimal performance, which may add to the cost and complexity of the upgrade.

3. Compatibility: While this intake manifold is designed to fit various Chevy LS engines, it may not be compatible with all vehicles or modifications. It is essential to ensure compatibility before making a purchase.

The Edelbrock FST-54039B LSX 92mm Intake Manifold (Big Mouth for Chevy LS1/LS2/LS6 Cathedral) is a high-performance aftermarket intake manifold that delivers improved airflow, better throttle response, and enhanced fuel mixture for increased power and better engine performance. However, it comes with a higher price tag and may require additional tuning for optimal performance. If you're looking for a significant power upgrade for your Chevy LS engine and are willing to invest in the upgrade, then this intake manifold is an excellent choice. However, if you're on a budget or prefer a more straightforward upgrade, then a factory intake manifold may be a more suitable option.

Details:

Specs: Cylinder Head Configuration: LS1/LS2/LS6 Cathedral Port, Fuel Injection Type: Multi-port, Basic Operating RPM Range: 1,800-6,0 Throttle Body Bore Size: 92mm, Engine Block Deck height : Standard deck. This listing is for a BRANDNEW FAST LSX 92mm Black Intake Manifold maintains the performance gains achieved over stock intake manifolds with no loss in provability or low RPM torque. UPS Next Day Guaranteed Order by 12pmPacific Time to ship the same day for next day guaranteed delivery!, Ground and USPS Priority Mail do not have a guaranteed shipping time frame. FAST LSX 92mm Intake Manifold Big Mouth Chevy LS1/LS2/LS6 - Cathedral Port.

Improved throttle body sealing flange o-ring gasket. While the new stylish, black intake manifold delivers terrific performance right out of box, it can be ported by customer for even more flow. Note: Drive-by-wire applications must re-use OEM throttle body or purchase aftermarket drive-by-wire.

part #: fst54039b prices

• $1222.95-$1263.31

specifications inputmanifolds:

• for models: Ls1, Ls2, Ls6
• for makes: Chevy
• brand: Edelbrock
• part type: Intake Manifold
• manufacturer warranty: 1 Year
• fitment type: Performance/custom
• manufacturer part number: FST-54039B
• mounting hardware included: Yes
• material: Aluminum
• country/region of manufacture: United States

shipping inputmanifolds:

• service: UPS Ground, USPS Priority Mail, USPS Priority Mail Express, UPS Next Day Air Saver
• cost: $0.00
• class: Standard, Expedited, One-day
• transit: 5-11 Days
• type: Fixed
• carrier: UPS, USPS

payments inputmanifolds:

• credit card: Discover
• other
• wallet: Paypal

general inputmanifolds:

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

offer inputmanifolds:

• options: Ship-to-home
• quantity: 6
• sold: 0
• availability: In Stock
• started: October 10, 2025

returns inputmanifolds:

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

seller inputmanifolds:

• rating: 97.5%
• city: Costa Mesa, California
• # reviews: 19721

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