Introduction

When choosing an intake manifold, many truck owners face a tough decision, especially between the 3.5'' Intake Manifold and the 6.7 Cummins Intake Horn Upgrade. Each of these products offers unique advantages and is suited for different applications. Understanding their specific features can help you make the best choice based on your needs, budget, and usage scenarios.

In this comparison, we’ll break down the key innovations, vehicle compatibility, installation requirements, pricing, and performance benefits of both intake manifolds to help you make an informed decision.

Key Innovations of the 3.5'' Intake Manifold

The 3.5'' Intake Manifold is a performance-oriented intake system designed to enhance the efficiency of the 6.7L Cummins diesel engine. Here are its main innovations:

• Two NPT Ports – Equipped with two NPT ports, allowing for greater customization by connecting various sensors or additional accessories.
• 0.5-1 MPG Improvement – Helps increase fuel efficiency, adding approximately 0.5 to 1 mile per gallon.
• EGT Reduction by 50-200°F – Optimizes airflow, lowering Exhaust Gas Temperatures (EGT) to reduce engine stress and extend its lifespan.
• Smooth 3.5'' Inlet to Dual 3'' Mandrel-Bent Pipes – The streamlined design and enlarged inlet diameter improve airflow efficiency, leading to better combustion and increased power output.

3.5'' Intake Manifold for 6.7L Cummins 2007-2018 Dodge Ram 2500/3500 | SPELAB

Intake Manifold

$99.00

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Key Innovations of the 6.7 Cummins Intake Horn Upgrade

If the 3.5'' Intake Manifold represents the first generation of performance intake systems, then the 6.7 Cummins Intake Horn Upgrade is its modern evolution. This upgrade not only enhances airflow and performance but also addresses some common issues, making it a more comprehensive and user-friendly solution.

• Enhanced Airflow Design – The unique internal structure creates more space for air to flow freely, improving overall engine performance.
• Precision Fitment – The top cover is meticulously designed to seamlessly integrate with the SPELAB EGR delete plate, ensuring a tight and secure fit.
• 45-Degree Sensor Port – Features a newly positioned 45-degree front-facing sensor connector, making sensor installation more accurate and convenient.
• Advanced Stud Design – A unique three-dimensional concave stud extends beyond the intake cylinder body, providing a more efficient mounting solution for heating bolts and enhancing system stability.
• Compact and Efficient Structure – The small bending angle and nearly 180-degree parallel arrangement minimize airflow restrictions while improving air dynamics and engine clearance.

Intake Manifold for 6.7L Cummins 2007-2024 Dodge Ram 2500/3500 | SPELAB

Intake Manifold

$598.00

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3.5'' Intake Manifold vs. 6.7 Cummins Intake Horn Upgrade

Based on the comparison table, it’s clear that the 6.7 Cummins Intake Horn Upgrade outperforms the 3.5'' Intake Manifold in multiple aspects:

• Higher Airflow & Horsepower Gains:
  The 6.7 Cummins Intake Horn Upgrade delivers 897 CFM of airflow, nearly twice the 487 CFM of the 3.5'' Intake Manifold. This increased airflow significantly boosts combustion efficiency and power output.

  • Provides up to 20 HP, compared to the 5 HP gain from the 3.5'' Intake Manifold.

• Better High-Load Adaptability:

  • The 6.7 Cummins Intake Horn Upgrade is ideal for high-performance applications like off-roading, towing, and heavy-duty driving, offering superior power delivery under heavy loads.
  • The 3.5'' Intake Manifold is more suited for daily driving and light-load conditions.

• More Comprehensive Functional Accessories:

  • The 6.7 Cummins Intake Horn Upgrade includes 4 sensor connectors, a 45-degree sensor port, and a three-dimensional stud design, enhancing installation precision and customization options.
  • The 3.5'' Intake Manifold has fewer accessories and limited functionality.

• Wider Vehicle Compatibility:

  • The 6.7 Cummins Intake Horn Upgrade fits 2007-2024 6.7L Cummins diesel engines, making it compatible with newer models, including 2020+ trucks.
  • The 3.5'' Intake Manifold is only compatible with 2007-2018 models, limiting its use for newer trucks.

Compatibility with Other Components

3.5'' Intake Manifold

• When installed with an EGR delete plate, additional drilling is required to connect the temperature sensor or heating element.
• This process may require DIY skills, making it less ideal for beginners but offering more customization options for advanced users.

6.7 Cummins Intake Horn Upgrade

• Designed for seamless compatibility with other performance upgrades, including the SPELAB EGR delete kit.
• Even if you don’t modify the EGR system, this intake horn still provides a perfect fit with OEM components.
• The easy installation process makes it a great choice for both beginners and experienced users.

Conclusion

Thank you for reading! This comparison is based on real performance data, but the true potential of SPELAB products depends on how you use and innovate with them. Share your thoughts and experiences to help drive the next generation of innovations with SPELAB!

FAQ

Q1: Which intake system is better for my 6.7L Cummins engine?

• If you're looking for a budget-friendly upgrade for daily driving and light performance tuning, the 3.5'' Intake Manifold is a great choice.
• If you need maximum performance for heavy loads, towing, or off-road driving, the 6.7 Cummins Intake Horn Upgrade is the superior option.

Q2: What tools and skills are needed to install the 3.5'' Intake Manifold?

• Installation requires basic tools like wrenches, screwdrivers, and a drill (if used with an EGR delete plate).
• Some DIY experience is recommended, but professional installation is advised for beginners.

Q3: Is the 6.7 Cummins Intake Horn Upgrade easy to install?

• Yes! The installation process is straightforward, making it newcomer-friendly compared to the 3.5'' Intake Manifold.

Q4: What other modifications should I consider to maximize performance?

• To fully unlock the potential of either intake system, consider adding an EGR delete kit and an upgraded exhaust system. These upgrades help optimize airflow and combustion efficiency.

Q5: How does each intake affect fuel economy?

• The 3.5'' Intake Manifold can improve fuel efficiency by 0.5-1 MPG, making it ideal for cost-conscious drivers.
• The 6.7 Cummins Intake Horn Upgrade focuses more on power gains than fuel savings, but it enhances performance under high-load conditions.