SPEEDMASTER 1-148-015 Downdraft Stack Intake Manifold 840136500681 260 289 302W

( Brand: Speedmaster ), ( Part Type: Intake Manifold ), ( Manufacturer Part Number: 1-148-015 ), ( Return Notes: New, Unused Condition W/original Packaging ), ( UPC: 840136500681 )

Review SPEEDMASTER Downdraft Stack Intake Manifold Ford 260 289 fits EFI

Introducing the Speedmaster 1-148-015 Downdraft EFI Stack Intake Manifold, a high-performance solution designed specifically for Ford engines with a displacement of 260, 289, or 302 cubic inches. This intake manifold is a perfect fit for those seeking to upgrade their engine's airflow and fuel delivery system for enhanced power and efficiency.

The Downdraft EFI Stack Intake Manifold is meticulously engineered and manufactured using advanced techniques and premium materials. It features a downdraft design that enables a more efficient and even fuel distribution to each cylinder. This results in improved combustion and, ultimately, more power and torque.

1. EFI (Electronic Fuel Injection) compatibility: This advanced design allows for precise fuel control and delivery, ensuring optimal engine performance.

2. Stack-type configuration: The manifold's stack-type design optimizes the intake ports' size and shape for maximum airflow and improved engine response.

3. Cast aluminum construction: The robust aluminum construction ensures durability and heat resistance, making it suitable for high-performance applications.

4. Four-bolt main seal: The four-bolt main seal design provides a strong and reliable seal between the intake manifold and the engine block, minimizing the risk of leaks and improving overall engine performance.

5. OEM-style bosses and ports: The manifold's OEM-style bosses and ports ensure compatibility with various fuel and vacuum system components, making installation straightforward.

Installing the Speedmaster 1-148-015 Downdraft EFI Stack Intake Manifold on your Ford engine involves removing the old intake manifold and gaskets and installing the new one with the provided gaskets. Properly following the installation instructions and using the recommended tools will ensure a successful installation process.

Upgrading to the Speedmaster 1-148-015 Downdraft EFI Stack Intake Manifold offers numerous benefits for your Ford engine. It enhances airflow and fuel distribution for improved power and torque, delivers smoother engine response, and offers the added convenience of EFI compatibility.

In summary, the Speedmaster 1-148-015 Downdraft EFI Stack Intake Manifold is an excellent choice for Ford engine owners seeking improved performance, efficiency, and convenience. Its advanced design, robust construction, and straightforward installation make it an indispensable upgrade for any high-performance engine setup.

The Ford 260, 289, and 302w engines are popular among automotive enthusiasts for their performance potential. One way to enhance the engine's power output is by upgrading the intake manifold, specifically the Speedmaster 1-148-015 downdraft EFI stack intake manifold. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this intake manifold for your Ford engine.

1. Improved Airflow: The downdraft design of the Speedmaster intake manifold promotes better airflow into the engine, which can lead to increased horsepower and torque.

2. Fuel Efficiency: The EFI (Electronic Fuel Injection) system ensures precise fuel delivery, which can improve fuel efficiency and reduce emissions.

3. Enhanced Throttle Response: The use of a stack design in the intake manifold allows for better fuel atomization and more efficient combustion, resulting in improved throttle response and acceleration.

4. Easy Installation: The Speedmaster intake manifold is designed to be a direct replacement for the factory intake manifold, making the installation process relatively simple and straightforward.

5. Compatibility: This intake manifold is compatible with various Ford engines, including the 260, 289, and 302w.

1. Cost: The Speedmaster 1-148-015 downdraft EFI stack intake manifold is a premium upgrade, and the cost may be a significant investment for some enthusiasts.

2. Complexity: While the installation process is generally straightforward, the use of electronic fuel injection and a stack intake design may require additional knowledge and expertise to properly tune and configure the engine for optimal performance.

3. Potential Compatibility Issues: Although the intake manifold is advertised as compatible with various Ford engines, it is essential to double-check the specifications to ensure a proper fit and function.

4. Potential Power Roll-On Issues: Some users have reported power roll-on issues when using this intake manifold, which can result in a loss of power when transitioning from wide-open throttle to cruising RPMs.

The Speedmaster 1-148-015 downdraft EFI stack intake manifold offers several advantages for Ford engine enthusiasts, including improved airflow, fuel efficiency, enhanced throttle response, and easy installation. However, the cost and potential complexity of the upgrade, along with potential compatibility and power roll-on issues, should be carefully considered before making a purchase. Ultimately, if you are looking for a significant power increase and are willing to invest the time and resources into proper tuning and configuration, this intake manifold may be an excellent choice for your Ford engine.

If you are considering purchasing the Speedmaster 1-148-015 downdraft EFI stack intake manifold for your Ford engine, make sure to thoroughly research the compatibility and potential power roll-on issues. Additionally, consult with a knowledgeable mechanic or engine builder to assess the feasibility of the upgrade, the required tuning process, and the potential power gains. Finally, weigh the pros and cons against the cost to determine if this intake manifold is the right choice for your specific application.

Details:

Items must be New, Unused, Not Installed, in the Original Packaging and able to resold. Speedmaster linkage set incorporates the throttle stops, idle controls, lever arms and joiner/balance all in one. Ford SB 260 289 302W Downdraft EFI Stack Intake Manifold System Complete Black The Speedmaster Individual throttle body system have all the flash of classic Weber induction but provide higher state tune and engine performance versatility. Condition: New.

The bell crank has a fully index able eccentric cable pulley that enables good slow speed provability and still attain full throttle geometry. Delivering crisp EFI performance with systems capable of supporting high hp. Higher state of tune and engine performance Superior idle characteristics astounding throttle response. MPN: 1-148-015.

Fuel and air is delivered through precision cast aluminum 50mm IDA throttle bodies that allow for superior idle characteristics astounding response while improving emissions economy tight air/fuel ratio control. Manufacturer: Speedmaster. Brand: Speedmaster. It also features a single screw adjustment for calibrating front to rear throttle shafts.

part #: 1148015 prices

• $2450.00-$2578.95

specifications inputmanifolds:

• for models: Efi
• for makes: Ford
• brand: Speedmaster
• part type: Intake Manifold
• manufacturer part number: 1-148-015
• return notes: New, Unused Condition W/original Packaging
• upc: 840136500681

returns inputmanifolds:

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

payments inputmanifolds:

• other
• credit card: Diners-club
• wallet: Apple-pay

general inputmanifolds:

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

seller inputmanifolds:

• # reviews: 182834
• rating: 99.5%
• city: Grant, Michigan

shipping inputmanifolds:

• type: Fixed
• service: Expedited
• transit: 2-6 Days
• class: Expedited
• cost: $0.00

offer inputmanifolds:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: June 10, 2026

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