Where diesel engines are concerned, very few models hold a torch to the likes of 6.7 Cummins where reliability, power, and general strength have to be brought into question. This workhorse does find its usage in many HD trucks.
However, one must make certain crucial upgrades to reap its benefits to the fullest, with an intake manifold upgrade making quite a lot of difference. A high-performance intake manifold is one of the basic things needed by those in search of increasing airflow, increasing horsepower, and reducing engine temperatures.
In this comprehensive post, we’ll show you everything that you need to know about the 6.7 Cummins intake manifold, including what may make it a worthy upgrade and these benefits for diesel enthusiasts.
Why Upgrade the Intake Manifold on a 6.7 Cummins?
An intake manifold is one of the most critical pieces for proper combustion and power, as it directs air into the cylinders of the engine. Most stock manifolds will do the job on a 6.7 Cummins, but can often become a choke point especially if you’re chasing high power. This means that an aftermarket manifold gives higher power output, increased fuel efficiency, and a much cooler-running engine.
Improved Horsepower
The important gains from a high-quality intake manifold are in terms of horsepower. Because the engine will have better airflow, it can burn fuel more economically and realize resultant power. For people who generally tow heavy loads or simply want extra horsepower, a high-performance intake manifold is quite indispensable.
Lower EGT
The exercising of a lower EGT is very vital in order to save the engine components from overheating. Improved airflow from a well-designed intake manifold contributes to lowering the EGT that keeps the motor within the safety temperature even when heavy loads are applied.
Improved Fuel Efficiency
With improved airflow and enhanced fuel combustion, an upgraded intake manifold often leads to improved fuel efficiency. With this, frequent users of their trucks or those who drive for long distances stand to save a lot in terms of fuel over a certain period.
Key Features of the SPELAB 3.5″ Intake Manifold for the 6.7 Cummins
The SPELAB 3.5″ Intake Manifold is a popular choice among 6.7 Cummins owners, known for its robust design and excellent airflow capabilities. This intake manifold is tailored for Dodge Ram 2500 and 3500 models from 2007 to 2018, offering a direct fit and simplified installation process. Let’s take a closer look at some of its standout features:
- 5-inch Diameter: With a 3.5-inch diameter, this intake manifold allows for increased airflow compared to the factory-installed manifold, ensuring your engine has a steady supply of air for peak performance.
- Stainless Steel Construction: The SPELAB intake manifold is crafted from high-quality stainless steel, which resists rust and corrosion. This material choice enhances the durability of the manifold, making it a long-lasting investment for any diesel truck owner.
- Easy Installation: Designed with the DIY enthusiast in mind, this intake manifold can be installed with basic tools. Minimal modifications are required, making it a straightforward upgrade that can be completed in a few hours.
- Improved Performance: Engineered to provide better airflow and lower EGTs, the SPELAB intake manifold ensures your 6.7 Cummins engine runs efficiently and at cooler temperatures, extending the life of your engine components.
Factors to Consider When Choosing a 6.7 Cummins Intake Manifold
It depends on quite a few things when you will be choosing an intake manifold for your 6.7 Cummins. Here are a few aspects to consider when making your choice:
Material Quality
Material quality governs the sustaining ability of an intake manifold and its resistance level to heat. Generally, it can be made from aluminum or stainless steel, both of them capable of taking in any impact and standing tough for a long time. The intake manifold in SPELAB, however, uses more stainless steel due to its high corrosion resistance, making it ideal for high-performance cases.
Compatibility and Fit
Make sure the model and year are compatible with the intake manifold that you will get. A well-fitted intake manifold minimizes the risk of air leaks and guarantees maximum performance. Take for instance, this SPELAB 3.5″ intake manifold is designed to work in Dodge Ram models equipped with a 6.7 Cummins engine, making it perfectly fit for year models ranging from 2007-2018.
Maintenance Requirements
The maintenance requirements also vary from one intake manifold to another. As an example, intake manifolds made of stainless steel are relatively easy to clean and maintain. Of course, regular maintenance will still be due for optimal flow and durability.
Installation of SPELAB Series Intake Manifold Step-by-Step
This doesn’t have to be a daunting task if you want to upgrade the intake manifold on your 6.7 Cummins. With a few tools and a great deal of patience, you can do it yourself. You can refer to a step-by-step guide for installing a SPELAB 3.5″ intake manifold:
- Preparation: This would involve preparing every needed tool: wrenches and screwdrivers, among any other essential tools that may be required. Make sure your engine is cool before you begin.
- Stock Intake Manifold Removal: Locate the intake manifold that has been installed and carefully remove the bolts to bolt it onto the engine. Take extra caution not to damage or harm any of the surrounding components such as the 6.7 Cummins valve cover that is placed next to it.
- Intake Ports: After the stock manifold has been taken out, clean the intake ports in the engine to eliminate buildups and debris to create a proper seal and help improve airflow.
- SPELAB Intake Manifold Installation: Position the new SPELAB intake manifold and secure it with the bolts. Now, proceed with an even tighten to snug it up.
- Re-attach the Components: Attach the hoses or sensors that were disconnected during the process. Ensure everything is secure and aligned properly.
- Leak Test: Start the engine and allow it to run for a few minutes. Inspect the manifold for any signs of leaks, and look for proper airflow.
Maintenance Tips for Your 6.7 Cummins Intake Manifold
To get the most out of your upgraded intake manifold, regular maintenance is essential. Here are a few tips to help keep your intake manifold in top condition:
- Routine Cleaning: Over time, deposits can build up within the intake manifold, restricting airflow. Periodically clean the manifold to maintain peak performance.
- Inspect for Wear and Tear: Check the manifold for any cracks or signs of wear, especially around the gasket areas. A damaged intake manifold can lead to air leaks and reduced performance.
- Monitor Engine Performance: If you notice any unusual changes in fuel efficiency or power output, inspect the intake manifold. Airflow issues can often affect these metrics.
The Role of the Intake Manifold in Overall Engine Health
The manifold provides more power, yet is also instrumental in keeping your engine healthy. A good intake manifold provides a continuing flow of air, optimized at times, that assures better combustion of fuel.
This reduces the wear and tear on the various components of the engine. To the diesel enthusiast, this means longer-lasting engine parts, improved reliability, and a more enjoyable driving experience.
Besides that, if you have also upgraded some components like the 6.7 Cummins valve cover, it looks pretty great with modifications in a high-performance intake manifold to complement these upgrades and reach your goal: a well-rounded setup with maximum efficiency and durability.
Conclusion: Elevating Your 6.7 Cummins with the Right Intake Manifold
Mention making an upgrade to a high-performance intake manifold for your 6.7 Cummins. It is one of those upgrades that any serious diesel enthusiast should make to increase power and improve fuel economy while protecting the engine and prolonging its life.
Ranging from towing, racing, or just simply enjoying the thrill of a powerful diesel engine, this modification could make a huge difference in the way one enjoys driving. The SPELAB 3.5″ Intake Manifold is the first choice for anyone who desires a more direct yet forceful solution that doesn’t waste time.
With its stainless steel build and fairly easy setup, it can take quite a beating from 6.7 Cummins owners. With putting proper maintenance together, frequent checks will ensure years of your diesel power going strong.
Be it considering an upgrade by itself or together with other modifications like a 6.7 Cummins valve cover, there’s no denying the advantages of a properly replaced intake manifold. To unlock the power, better performance, and further life expectancy that only a properly chosen intake manifold can confer upon the 6.7 Cummins diesel engine, one must consider changing it.
