SPEEDMASTER 1-147-105-02 Midrise Air Dual Plane Carby 840136569732 4150 Manifold

( Brand: Speedmaster ), ( Part Type: Manifold ), ( Manufacturer Part Number: 1-147-105-02 ), ( Return Notes: New, Unused Condition W/original Packaging ), ( UPC: 840136569732 )

Review SPEEDMASTER Midrise Air Dual Plane 4150 Carby Manifold fits LS3

Introducing the Speedmaster 1-147-105-02 Midrise Air Dual Plane 4150 Carburetor Manifold, a high-performance component designed specifically for use with LS3 engines. This manifold is an essential upgrade for any enthusiast looking to optimize the airflow and fuel delivery to their engine for improved power and efficiency.

The Speedmaster 1-147-105-02 is a midrise style manifold, which means that the carburetor sits at a mid-height position between the engine and the intake manifold. This design provides better clearance for aftermarket components and increases the overall strength of the manifold.

Constructed from 4150 aluminum, this manifold is both lightweight and durable. The airplane-style dual plane design of the manifold ensures smooth and consistent airflow into the carburetor, which in turn delivers better fuel atomization and combustion. The manifold features a polished finish, which not only looks great but also helps to reduce air turbulence and improve airflow.

The Speedmaster 1-147-105-02 Midrise Air Dual Plane 4150 Carburetor Manifold is designed to fit LS3 engines and is a direct replacement for the factory intake manifold. It comes with all necessary hardware for installation, including fuel rails, fuel pressure regulators, and throttle position sensors. The manifold also includes provision for an electric choke, making it a complete solution for those looking to upgrade their LS3 engine's intake system.

Installation of the manifold is relatively straightforward, but it is recommended that the job be done by a professional mechanic or experienced enthusiast. The manifold requires modification to the factory engine wiring harness and may require additional plumbing modifications for the fuel system, depending on the specific application.

In summary, the Speedmaster 1-147-105-02 Midrise Air Dual Plane 4150 Carburetor Manifold is a high-quality intake manifold designed for use with LS3 engines. Its midrise design, aluminum construction, and airplane-style dual plane design make it an excellent choice for those looking to optimize their engine's intake system for improved power and efficiency. With a polished finish and all necessary hardware included, this manifold is a complete solution for any LS3 engine upgrade.

Pros and Cons of Buying a Speedmaster 1-147-105-02 Midrise Air Dual Plane Carburetor Manifold for LS3 Engine

a. Suitable for LS3 Engines: This carburetor manifold is specifically designed for use with LS3 engines, ensuring a precise fit and optimal engine performance.

b. Dual-Plane Design: The dual-plane design of this manifold evenly distributes air to the carburetor, improving the engine's idle quality and overall performance.

c. Air Dual Plane Design: The air dual plane design helps to reduce engine heat and improve fuel efficiency by ensuring that the air-fuel mixture is cooler when it enters the engine.

d. Midrise Design: The midrise design of the manifold provides better clearance for engine components, making it easier to install and service.

a. Compatibility: This carburetor manifold may not be compatible with all LS3 engines or aftermarket parts. It's essential to check the specifications of your engine and any existing components to ensure compatibility.

b. Cost: The Speedmaster 1-147-105-02 Midrise Air Dual Plane Carburetor Manifold is priced higher than some other options on the market.

c. Installation: Installing this carburetor manifold may require some technical expertise and additional tools. It's important to follow the manufacturer's instructions carefully to ensure proper installation.

The Speedmaster 1-147-105-02 Midrise Air Dual Plane Carburetor Manifold for LS3 engines offers several advantages, including improved engine performance, better idle quality, and increased fuel efficiency. However, its compatibility with specific engines and higher cost compared to some alternatives are potential drawbacks. If you're looking to upgrade your LS3 engine's carburetor system, this manifold is a solid choice, but make sure to check compatibility before making a purchase.

If you're in the market for a new carburetor manifold for your LS3 engine and are looking for a high-performance, dual-plane design, the Speedmaster 1-147-105-02 Midrise Air Dual Plane Carburetor Manifold is an excellent option to consider. Just be sure to double-check compatibility with your engine and any existing components before making a purchase.

Details:

The main difference is that there an open area under the plenum chamber. Domestic Shipping: The shipping cost on this listing or the Free Shipping is for lower 48 States. The air flowing under the plenum provides a cooler charge for incoming with less heat transfer from engine. This feature is sometimes called an air gap design.

Chevy GM LS3 MidRise Air Dual Plane 4150 Carby Manifold Machine Polished The Speedmaster design features the identical plenum and runner as normal. Items must be New, Unused, Not Installed, in the Original Packaging and able to resold. Cast from steel molds for a tighter grain and reduction of porosity Pressure tested to ensure maximum performance

Brand: Speedmaster. Open area under the plenum chamber air gap design. Manufacturer: Speedmaster. Condition: New.

MPN: 1-147-105-02.

part #: 114710502 prices

• $352.50-$371.05

specifications inputmanifolds:

• for models: Ls3
• brand: Speedmaster
• part type: Manifold
• manufacturer part number: 1-147-105-02
• return notes: New, Unused Condition W/original Packaging
• upc: 840136569732

shipping inputmanifolds:

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

seller inputmanifolds:

• city: Grant, Michigan
• # reviews: 182863
• rating: 99.5%

offer inputmanifolds:

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

returns inputmanifolds:

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

general inputmanifolds:

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

payments inputmanifolds:

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

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