HOLLEY 300-267 Rise Plenum Base Adapter Kit Gm 090127065426 LS1/LS2/LS6

( Brand: Holley ), ( Manufacturer Part Number: 300-267 ), ( Part Type: Adapter ), ( Material: Aluminum ), ( Country/region Of Manufacture: Cn ), ( UPC: 090127065426 )

Review HOLLEY Mid rise Plenum Base Adapter Kit Gm Ls1/ls2/ls6 fits LS1 LS2 LS6

The Holley 300-267 Mid-Rise Plenum Base Adapter Kit is a must-have accessory for any enthusiast working on a GM LS1, LS2, or LS6 engine. This adapter kit is specifically designed to provide a solid foundation for Holley's mid-rise intake manifolds, allowing for a more efficient and powerful airflow system.

The mid-rise design of this plenum base adapter is engineered to offer optimal clearance for aftermarket components such as tall valvesprings, larger camshafts, or even superchargers. With a height of approximately 3.25 inches, it provides ample space for these upgrades while maintaining a perfect fit with the engine.

This Holley kit comes with a cast aluminum base that boasts excellent heat dissipation properties. The base is also CNC-machined to ensure a precise and accurate fit with the engine. It is designed to work with factory LS1, LS2, and LS6 intake manifolds, making it a versatile solution for a wide range of applications.

The Holley 300-267 Mid-Rise Plenum Base Adapter Kit also includes a set of gaskets to ensure a leak-free installation. These gaskets are made from a high-quality material that can withstand the extreme temperatures and pressures encountered in high-performance engine builds.

The Holley 300-267 Mid-Rise Plenum Base Adapter Kit is an essential accessory for any LS engine builder looking to maximize power and efficiency. With its robust design, versatile compatibility, and easy installation, it offers a reliable and cost-effective solution to the common challenge of clearing aftermarket components while maintaining a proper fit with the engine.

In summary, the Holley 300-267 Mid-Rise Plenum Base Adapter Kit is a high-quality, cast aluminum adapter designed to provide a solid foundation for Holley's mid-rise intake manifolds on GM LS1, LS2, and LS6 engines. Its mid-rise design offers clearance for aftermarket components, while its precision CNC-machined base ensures a perfect fit with the engine. The kit includes a set of gaskets for a leak-free installation and offers excellent heat dissipation properties.

Holley 300-267 Mid-Rise Plenum Base Adapter for GM LS1/LS2/LS6: A Comprehensive Evaluation

The Holley 300-267 Mid-Rise Plenum Base Adapter is a popular choice among automotive enthusiasts who are looking to upgrade their intake systems for their GM LS1, LS2, or LS6 engines. This component is designed to provide improved airflow and better throttle response. In this analysis, we will discuss the advantages and disadvantages of investing in this mid-rise plenum base adapter kit.

1. Enhanced Airflow: The primary reason for purchasing this adapter is to optimize airflow into the intake manifold, which leads to better engine performance and improved power output.

2. Improved Throttle Response: With smoother airflow, the throttle response is significantly enhanced, providing a more responsive driving experience.

3. Compatibility: The Holley 300-267 Mid-Rise Plenum Base Adapter is compatible with various GM LS engines, including LS1, LS2, and LS6, making it a versatile option for a wide range of vehicles.

4. Easy Installation: The installation process is relatively simple and straightforward, making it an accessible modification for both professional mechanics and DIY enthusiasts.

1. Cost: The Holley 300-267 Mid-Rise Plenum Base Adapter is a premium aftermarket part and comes with a higher price tag than OEM alternatives.

2. Potential Clearance Issues: Depending on the specific vehicle and exhaust system configuration, clearance issues may arise, requiring additional modifications or components to ensure proper fitment.

3. Mandrel Bent Intake Manifold: For optimal performance, a mandrel bent intake manifold is recommended, which can add to the overall cost of the project.

The Holley 300-267 Mid-Rise Plenum Base Adapter offers numerous benefits, such as improved airflow, better throttle response, and compatibility with various GM LS engines. However, it comes with a higher cost and potential clearance issues that need to be considered. If you are looking for a significant improvement in engine performance and are willing to invest in the necessary components, this mid-rise plenum base adapter kit is a worthy investment.

If you are considering purchasing the Holley 300-267 Mid-Rise Plenum Base Adapter, ensure that you have the necessary clearance and are prepared for any additional modifications that might be required. Additionally, consider investing in a mandrel bent intake manifold for optimal performance. Overall, this mid-rise plenum base adapter is recommended for those seeking enhanced engine performance and improved throttle response from their GM LS engine.

Details:

For use with LS Dual Plane Mid-Rise intake manifold base to adapt modular tops. May require an aftermarket hood for some vehicle applications. 300-267 Holley Mid-Rise Plenum Base Adapter Kit - GM LS1/LS2/LS6: 269.95: The Modular intake utilizes the popular LS1/LS2/LS6 cathedral port 2 x 4 manifold along with a plenum base adapter and 92MM EFI top which converts it into. With a max overall height of only 10.44, the Mid-Rise manifold is an excellent choice for street and performance street/strip applications with power band from 1,500-6,500 RPM limited hood clearance.

Unique modular design allows the combination of a traditional dual-plane layout with an EFI manifold plenum to produce great mid-range torque without compromising top end power. The Modular Mid-Rise intake utilizes the popular Holley LS1/LS2/LS6 cathedral port 2 x 4 manifold along with a purpose built plenum base adapter and 92MM EFI top which converts it into. Buyer pays return shipping. Great for supercharged or turbocharged engines.

Cast aluminum construction. Its perfect for.

part #: 300267 price

• $299.95

specifications airfueldepo:

• for models: Ls1, Ls2, Ls6
• brand: Holley
• mpn: 300-267
• part type: Adapter
• material: Aluminum
• country/region of manufacture: Cn
• upc: 090127065426

returns airfueldepo:

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

seller airfueldepo:

• # reviews: 9647
• city: Bowling Green, Kentucky
• rating: 98.9%

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general airfueldepo:

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

offer airfueldepo:

• started: September 13, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping airfueldepo:

• transit: 4-7 Days
• carrier: UPS
• service: UPS Ground
• cost: $0.00
• type: Fixed
• class: Standard

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