GM 1268656 Intake Manifold

( Brand: Gm ), ( Mounting Style: Bolt-on ), ( Type: Intake Manifold ), ( Manufacturer Warranty: 1 Year ), ( Items Included: Gasket ), ( Manufacturer Part Number: 1268656 ), ( Material: Aluminum ), ( Features: Bare ), ( Vintage Part: No ), ( Placement On Vehicle: Front ), ( Fuel Type: Gasoline )

Review GM Intake Manifold New fits LS3

Introducing the GM 1268656 LS3 Intake Manifold, an essential component for your LS3 engine that delivers improved performance and enhanced fuel efficiency. This intake manifold, engineered by General Motors, is meticulously designed with a multi-port, cross-flow runner port layout, allowing for optimal airflow distribution and efficient combustion.

The intake manifold is crafted from aluminum, ensuring a lightweight yet robust construction that can withstand the rigors of high-performance driving. Its port design is optimized for large-bore throttle bodies, delivering a more powerful and responsive airflow into the engine.

This intake manifold comes with factory-installed fuel injectors, ensuring a seamless integration into your LS3 engine. Its intake ports are precision-machined to ensure a perfect seal with the intake runners of your engine, minimizing air leaks and maximizing power output.

Moreover, the GM 1268656 LS3 Intake Manifold features a wet-flow design, which means that the intake ports are submerged in coolant when the engine is running. This design helps to maintain consistent intake air temperature, ensuring optimal engine performance under various driving conditions.

With its robust design, optimized port layout, and factory-installed fuel injectors, the GM 1268656 LS3 Intake Manifold is an excellent investment for any LS3 engine builder or performance enthusiast looking to extract maximum power and efficiency from their engine. Upgrade your engine with this high-performance intake manifold today and experience the difference it can make in your driving experience.

Buying the GM 1268656 LS3 intake manifold involves considering its potential advantages and disadvantages for your specific application. Here's a detailed analysis:

1. Enhanced Performance: The LS3 intake manifold is designed to optimize airflow and fuel delivery, which can lead to increased horsepower and torque. This makes it an attractive option for performance enthusiasts looking to upgrade their engines.

2. Durability: The LS3 intake manifold is built with high-quality materials and engineered for longevity. It can withstand the extreme temperatures and pressures generated by high-performance engines.

3. Compatibility: This intake manifold is compatible with various LS-based engines, including the LS1, LS3, LS6, and LS7. This versatility makes it a popular choice among engine builders and enthusiasts.

4. Improved Idle Stability: The LS3 intake manifold features a unique design that helps maintain consistent idle quality, ensuring a smoother driving experience.

1. Cost: The GM 1268656 LS3 intake manifold is a premium upgrade, and its price may be a deterrent for some. However, the performance gains and durability may justify the investment for those seeking optimal engine performance.

2. Complex Installation: Installing the LS3 intake manifold can be a complex process, requiring precise measurements and adjustments. It may necessitate additional time, tools, and expertise to ensure a proper installation.

3. Potential Clearance Issues: Depending on the engine bay configuration, the LS3 intake manifold may require modification to clear various components, such as the power steering pump, alternator, or accessory drives.

The GM 1268656 LS3 intake manifold is a high-performance upgrade that offers significant benefits for those seeking optimal engine performance. Its enhanced durability, compatibility with various LS engines, and improved idle stability are compelling advantages. However, the cost and complex installation process may deter some. Ultimately, the decision to purchase this intake manifold depends on your specific needs, budget, and goals for your engine build.

If you're looking to significantly enhance the performance of your LS-based engine and are willing to invest in a premium upgrade, then the GM 1268656 LS3 intake manifold is a solid choice. However, if the cost and complexity of the installation outweigh the benefits for your application, you may want to consider alternative intake manifolds or focus on other areas of your engine build.

Details:

Purchased a few years ago, but never used it. I will set a flat rate of $50.00 shipping, but charge actual cost. Brand new OEM LS3 intake manifold. Details can be worked out after the sale.

part #: 1268656 prices

• $137.79-$575.00

specifications inputmanifolds:

• for models: Ls3
• brand: Gm
• mounting style: Bolt-on
• type: Intake Manifold
• manufacturer warranty: 1 Year
• items included: Gasket
• manufacturer part number: 1268656
• material: Aluminum
• features: Bare
• vintage part: No
• placement on vehicle: Front
• fuel type: Gasoline

offer inputmanifolds:

• availability: In Stock
• quantity: 1
• sold: 0
• started: March 10, 2026
• options: Ship-to-home
• best offers: True

returns inputmanifolds:

• policy: No Returns

payments inputmanifolds:

• wallet: Paypal
• other
• credit card: Discover

shipping inputmanifolds:

• type: Fixed
• carrier: FedEx
• cost: $50.00
• class: Standard
• transit: 4-9 Days
• service: FedEx Ground / FedEx Home Delivery

general inputmanifolds:

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

seller inputmanifolds:

• rating: 100.0%
• # reviews: 58
• city: Aliquippa, Pennsylvania

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