68RFE vs 48RE: Which Transmission Is Right For You?

Introduction 

Welcome to our comprehensive comparison of two heavyweights in the world of automatic transmissions: the 68RFE transmission and the 48RE transmission. These transmissions have made a significant impact in the realm of heavy-duty trucks and towing applications. Let's delve into their background and features to help you make an informed decision. If you have questions or want to get your 68RFE or 48RE transmission build started, contact Tier One or call 602-399-5484!

The 68RFE transmission, introduced in 2007 by Chrysler, represents a newer generation of transmissions. With six forward gears and one reverse gear, it offers smoother shifting and optimized power delivery. It excels in performance-oriented applications and heavy towing, thanks to its higher torque capacity and improved gear ratios.

On the other hand, the battle-tested 48RE transmission has been a reliable companion since the early 2000s. With four forward gears and one reverse gear, it boasts a robust and simpler design. The 48RE is known for its strength, durability, and affordability, making it a popular choice for those with more modest towing needs.

Throughout this comparison, we will explore the technical specifications, towing capacities, and additional features of both transmissions. By the end, you'll have a clear understanding of which transmission aligns best with your specific requirements and driving preferences. Let's dive in and unlock the secrets of the 68RFE and the 48RE!

Understanding the Basics

Before we delve into the specifics, let's first establish a basic understanding of these transmissions.

What are the 68RFE and 48RE transmissions?

The 68RFE and 48RE are both automatic transmissions designed and manufactured by the renowned company, Chrysler. These transmissions are commonly found in heavy-duty trucks and are known for their robustness and durability. While they share some similarities, there are notable differences that set them apart.

Power Handling and Towing Capacity

One of the primary considerations when choosing a transmission is its power handling and towing capacity. Let's take a closer look at how the 68RFE and the 48RE stack up in this regard.

Power Handling and Towing Capacity

The ability to handle power and tow heavy loads is crucial for trucks and vehicles designed for hauling. Let's examine how the 68RFE and the 48RE differ in terms of power handling and towing capacity.

68RFE: Harnessing Power with Finesse

The 68RFE transmission is the newer of the two, introduced in 2007 as an improved version of the 48RE. It boasts six forward gears and one reverse gear, allowing for smoother shifting and optimized power delivery. With its higher torque capacity, the 68RFE is better equipped to handle increased power outputs, making it an excellent choice for performance-oriented applications.

When it comes to towing capacity, the 68RFE is no slouch either. Its robust construction and improved gear ratios enable it to handle heavy loads with relative ease. Whether you're towing a trailer or hauling a substantial payload, the 68RFE can provide the necessary muscle to get the job done.

48RE: Proven Strength and Reliability

The 48RE transmission has been around for quite some time, introduced in the early 2000s. It features four forward gears and one reverse gear, making it a simpler transmission compared to the 68RFE. However, don't let its simplicity fool you; the 48RE is renowned for its strength and reliability.

While it may not have as many gears as the 68RFE, the 48RE can still handle a considerable amount of power. It has been the go-to choice for heavy-duty applications for many years, proving its capability in towing and hauling scenarios.

Comparing the Differences: 68RFE vs. 48RE

To further understand the disparities between the 68RFE and the 48RE, let's compare them in terms of technical specifications and additional features.

Technical Specifications

Additional Features

While both transmissions serve their purpose effectively, the 68RFE boasts some additional features that set it apart from the 48RE:

1. Shift Quality: The 68RFE offers smoother shifting due to its increased number of gears, which translates to improved driving comfort and reduced RPM fluctuations during gear changes.
2. Enhanced Cooling: The 68RFE includes additional cooling features such as a transmission cooler bypass valve and an auxiliary transmission oil cooler, ensuring optimal operating temperatures even under heavy loads.
3. Tow/Haul Mode: The 68RFE is equipped with a tow/haul mode, which adjusts shift points and transmission behavior to optimize performance when towing or hauling heavy loads.
4. Improved Efficiency: With its additional gears and optimized gear ratios, the 68RFE can provide better fuel efficiency compared to the 48RE, especially during highway driving.
5. Transmission Controller: The 68RFE features a more advanced transmission controller, allowing for greater control over shifting and customization options.

It's important to note that while the 68RFE offers these additional features and advantages, it may come at a higher cost compared to the 48RE. Depending on your specific needs and budget, you can weigh these factors to make an informed decision.

Which Transmission Should You Choose?

Now that we've explored the key differences between the 68RFE and the 48RE, it's time to determine which transmission is the right fit for you. Here are some factors to consider:

1. Intended Use

Consider how you plan to use your vehicle. If you frequently tow heavy loads or require enhanced performance, the 68RFE may be the better option. On the other hand, if you have more modest towing needs and prioritize simplicity and proven reliability, the 48RE could be the suitable choice.

2. Budget

Transmissions can be a significant investment. It's important to consider your budget when making a decision. Generally, the 48RE tends to be more cost-effective due to its simpler design and wider availability in the market.

3. Future Modifications

If you have plans to modify your vehicle for increased power or performance in the future, it may be wise to opt for the 68RFE. Its higher torque capacity and improved gear ratios make it more suitable for handling aftermarket upgrades.

4. Professional Advice

Consulting with a trusted mechanic or transmission specialist can provide invaluable insights. They can assess your specific needs, vehicle setup, and offer personalized recommendations based on their expertise.

Remember, the ultimate goal is to choose a transmission that aligns with your specific requirements and provides a satisfactory driving experience.

Pros and Cons: 68RFE Transmission

Pros:

1. Enhanced Performance: The 68RFE offers six forward gears and optimized power delivery, resulting in smoother shifting and improved performance.
2. Higher Torque Capacity: With its higher torque capacity, the 68RFE can handle increased power outputs, making it suitable for performance-oriented applications.
3. Impressive Towing Capacity: The robust construction and improved gear ratios of the 68RFE allow it to handle heavy loads with relative ease, making it an excellent choice for towing needs.
4. Compatibility with Aftermarket Upgrades: If you have plans for future modifications or aftermarket upgrades, the 68RFE's higher torque capacity and improved gear ratios make it a more suitable choice.

Cons:

1. Higher Cost: The 68RFE tends to be more expensive compared to the 48RE due to its advanced design and features.
2. Complexity: The 68RFE has a more intricate design and control system, which may require specialized knowledge and tools for maintenance and repairs.
3. Limited Availability: Due to its relatively recent introduction, the availability of replacement parts and compatible units for the 68RFE may be more limited compared to the 48RE.

Pros and Cons: 48RE Transmission

Pros:

1. Proven Reliability: The 48RE has a long-standing reputation for its strength and durability, making it a reliable choice for heavy-duty applications.
2. Simpler Design: The 48RE has a simpler design compared to the 68RFE, which can translate to easier maintenance and potentially lower repair costs.
3. Cost-Effective: The 48RE is generally more affordable compared to the 68RFE, making it a budget-friendly option for those with modest towing needs.

Cons:

1. Fewer Gears: With four forward gears compared to the six gears of the 68RFE, the 48RE may not provide the same level of optimized power delivery and fuel efficiency.
2. Lower Torque Capacity: While capable of handling moderate power outputs, the 48RE may not be as suitable for high-performance applications or extensive aftermarket upgrades.
3. Less Advanced Features: The 48RE may lack some of the advanced features and technological advancements found in the 68RFE, limiting its overall capabilities and performance potential.

Keep in mind that the pros and cons mentioned above are general considerations and may vary depending on specific vehicle setups, driving conditions, and individual preferences. It's advisable to consult with a professional mechanic or transmission specialist to assess your specific needs and make an informed decision.

Frequently Asked Questions (FAQs)

Q1: Can I upgrade from a 48RE to a 68RFE? A1: While it is technically possible to upgrade from a 48RE to a 68RFE, it is not a straightforward swap. The upgrade involves more than just swapping the transmission, as it requires modifications to the vehicle's computer system and other supporting components. Consulting with a professional mechanic is crucial before considering such an upgrade.

Q2: Are the 68RFE and 48RE interchangeable? A2: No, the 68RFE and 48RE transmissions are not interchangeable without significant modifications. They have different bolt patterns, wiring harnesses, and control systems, making them incompatible without extensive retrofitting.

Q3: Can the 48RE handle heavy towing? A3: Yes, the 48RE is capable of handling heavy towing. While it may have fewer gears compared to the 68RFE, the 48RE's robust construction and proven reliability make it a popular choice for towing applications.

Q4: Are there any common issues or weaknesses with the 68RFE and 48RE? A4: Both transmissions have their own set of common issues. The 68RFE is known for valve body and solenoid problems, while the 48RE has been associated with torque converter failures and overheating in some cases. Regular maintenance and addressing issues promptly can help mitigate potential problems.

Q5: Can I install a different transmission altogether? A5: It is possible to install a different transmission in your vehicle; however, it requires extensive modifications, including changes to the vehicle's computer system, mounting points, and driveline components. Such swaps are complex and generally not recommended unless you have a thorough understanding of automotive mechanics or seek professional assistance.

Q6: Can I upgrade my vehicle's transmission from a 48RE to a 68RFE? A1: While it is technically possible to upgrade from a 48RE to a 68RFE, it is a complex process that involves more than just swapping the transmission. It often requires modifications to the vehicle's computer system, wiring harnesses, and other supporting components. It's recommended to consult with a professional mechanic or transmission specialist to evaluate the feasibility and potential challenges of such an upgrade.

Q7: Are there any common issues or weaknesses associated with the 68RFE and 48RE transmissions? A2: Both transmissions have their own set of common issues. The 68RFE is known to have occasional problems with the valve body and solenoids, while the 48RE has been associated with torque converter failures and occasional overheating in certain circumstances. Regular maintenance, prompt addressing of issues, and adhering to manufacturer guidelines can help mitigate these potential problems.

Q8: How often should I service the 68RFE and 48RE transmissions? A3: Regular maintenance is crucial for ensuring the longevity and optimal performance of any transmission. It's generally recommended to follow the manufacturer's guidelines for fluid and filter changes, which typically range from every 30,000 to 60,000 miles, depending on the driving conditions and usage. However, it's advisable to consult your vehicle's owner manual or a professional mechanic for specific recommendations tailored to your vehicle.

Q9: Can I install a transmission cooler to improve the performance and lifespan of the 68RFE and 48RE? A4: Absolutely! Installing a transmission cooler can help in dissipating heat and maintaining optimal operating temperatures, which is especially beneficial for towing or driving in extreme conditions. It's important to choose a cooler that is compatible with your vehicle and follow proper installation procedures. Consulting with a transmission specialist or seeking professional help can ensure a proper installation that maximizes the benefits.

Q10: How do I identify if my vehicle has a 68RFE or a 48RE transmission? A5: The easiest way to identify the transmission in your vehicle is by referring to the vehicle's documentation, such as the owner's manual or maintenance records. Additionally, you can consult a professional mechanic or transmission specialist who can visually inspect the transmission or utilize diagnostic tools to determine the exact model of your vehicle's transmission.

Tier One's 68RFE Transmission Options:

-2007.5-2018 Ram 2500 & 3500 68RFE Tow-All Transmission
-2019-2024 Ram 2500 & 3500 68RFE Tow-All Transmission
-2007.5-2018 Ram 2500 & 3500 600HP Stage 1 68RFE Transmission
-2019-2024 Ram 2500 & 3500 600HP Stage 1 68RFE Transmission
-2007.5-2018 Ram 2500 & 3500 750HP Stage 2 68RFE Transmission
-2019-2024 Ram 2500 & 3500 750HP Stage 2 68RFE Transmission
-2007.5-2018 Ram 2500 & 3500 900HP Stage 3 68RFE Transmission
-2019-2024 Ram 2500 & 3500 900HP Stage 3 68RFE Transmission
-2007.5-2018 Ram 2500 & 3500 +1000HP Competition All-Out Transmission
-2019-2024 Ram 2500 & 3500 +1000HP Competition All-Out Transmission

Tier One's 48RE Transmission Options:

-2005-2007 Ram 2500 & 3500 380HP Stage 1 48RE Transmission
-2004 Ram 2500 & 3500 380HP Stage 1 48RE Transmission
-2003 Ram 2500 & 3500 380HP Stage 1 48RE Transmission
-2005-2007 Ram 2500 & 3500 450HP Stage 2 48RE Transmission
-2004 Ram 2500 & 3500 450HP Stage 2 48RE Transmission
-2003 Ram 2500 & 3500 450HP Stage 2 48RE Transmission
-2005-2007 Ram 2500 & 3500 650HP Stage 3 48RE Transmission
-2004 Ram 2500 & 3500 650HP Stage 3 48RE Transmission
-2003 Ram 2500 & 3500 650HP Stage 3 48RE Transmission
-2005-2007 Ram 2500 & 3500 750HP Stage 4 48RE Transmission
-2004 Ram 2500 & 3500 750HP Stage 4 48RE Transmission
-2003 Ram 2500 & 3500 750HP Stage 4 48RE Transmission
-2005-2007 Ram 2500 & 3500 +1000HP Competition 48RE Transmission
-2004 Ram 2500 & 3500 +1000HP Competition Transmission
-2003 Ram 2500 & 3500 +1000HP Competition Transmission