68Rfe Transmission: Ultimate Guide to Performance & Repair


The 68RFE transmission is a six-speed automatic gearbox used in heavy-duty trucks. It offers durability and smooth performance.

The 68RFE transmission, introduced by Chrysler, is commonly found in Dodge Ram trucks. Known for its robust construction, it enhances vehicle performance and efficiency. Its advanced design includes features like electronic shift control and adaptive learning. This transmission provides a reliable option for those needing heavy-duty capabilities.

It also supports towing and off-road applications, making it versatile. Regular maintenance ensures optimal performance and longevity. Understanding its functions can help in making informed decisions about vehicle care. Whether for work or recreation, the 68RFE transmission stands out as a dependable choice.

68Rfe Transmission: Ultimate Guide to Performance & Repair

Credit: randys-transmissions.com

The 68rfe Transmission


The 68RFE transmission is a well-known component in heavy-duty trucks. It is famous for its strength and reliability. This transmission is a key part of many powerful vehicles on the road today.


Origins And Evolution


The 68RFE transmission was developed by Chrysler. It was first introduced in 2007. This transmission was designed to handle more torque and power. Over the years, it has evolved to become more efficient and durable.

Chrysler made many improvements to the original design. These improvements increased its performance and longevity. The 68RFE transmission is now one of the most trusted transmissions in the industry.


Key Features And Applications


The 68RFE transmission has many important features. One key feature is its six-speed automatic design. This allows for smooth and powerful shifts.

Another feature is its ability to handle high torque. This makes it ideal for heavy-duty trucks and towing. The transmission also has a robust cooling system. This helps prevent overheating and extends its life.

Some common applications of the 68RFE transmission include:

  • Dodge Ram 2500 and 3500 trucks
  • Commercial vehicles
  • Heavy-duty towing
Feature Benefit
Six-speed automatic Smooth and powerful shifts
High torque capacity Ideal for heavy-duty applications
Robust cooling system Prevents overheating


Design Specifications Of The 68rfe


The 68RFE transmission is a robust and advanced gearbox. It’s designed for heavy-duty applications. This transmission is widely used in Dodge and Ram trucks.


Technical Aspects


The 68RFE is a six-speed automatic transmission. It features a durable aluminum alloy casing. This casing ensures longevity and resilience in tough conditions.

Key components include:

  • Planetary gear sets
  • Hydraulic control system
  • Torque converter

The transmission uses a fully electronic control system. This system provides seamless shifting and optimal performance. It helps in maintaining fuel efficiency and power delivery.

Here are some technical specifications:

Feature Specification
Gear Ratios 1st: 3.231, 2nd: 1.837, 3rd: 1.410, 4th: 1.000, 5th: 0.816, 6th: 0.625
Torque Capacity Up to 900 lb-ft
Weight Approximately 260 lbs


Comparative Analysis With Other Transmissions


The 68RFE often gets compared with the Aisin AS69RC. Both are used in heavy-duty trucks. The 68RFE has a higher torque capacity. It offers better performance in demanding situations.

The Allison 1000 is another competitor. The Allison 1000 is known for its reliability and smooth shifting. Yet, the 68RFE provides a better fuel economy and more control.

The key differences are:

  1. Torque capacity: 68RFE handles more torque.
  2. Fuel efficiency: 68RFE provides better fuel economy.
  3. Control: 68RFE offers enhanced control features.

In summary, the 68RFE stands out for its durability and performance. It is a preferred choice for heavy-duty applications.

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Common Performance Upgrades


The 68RFE transmission is a robust component in many vehicles. Enthusiasts often seek to enhance its performance. This section explores common upgrades that boost efficiency and power. These upgrades can range from aftermarket kits to DIY modifications.


Aftermarket Kits And Components


Aftermarket kits and components are popular for improving the 68RFE transmission. These kits often include upgraded clutch packs, valve bodies, and torque converters. Upgraded clutch packs provide better friction and durability. They are essential for high-performance applications.

The valve body is another crucial component. An upgraded valve body can improve fluid flow and shift quality. This results in smoother and faster gear changes. Torque converters can also be upgraded to handle more torque and provide better acceleration.

Component Benefit
Clutch Packs Enhanced friction and durability
Valve Bodies Improved fluid flow and shift quality
Torque Converters Better torque handling and acceleration


Diy Modifications


For those who prefer a hands-on approach, DIY modifications offer a cost-effective alternative. Simple upgrades can make a significant impact. Replacing the transmission fluid with a high-quality synthetic fluid is a great start. This improves lubrication and reduces wear.

Adjusting the transmission bands is another effective DIY modification. Properly adjusted bands ensure optimal gear engagement and extend the transmission’s lifespan. Installing a transmission cooler is also beneficial. A cooler helps maintain optimal operating temperatures, preventing overheating.

  1. Replace transmission fluid with synthetic fluid.
  2. Adjust transmission bands for better gear engagement.
  3. Install a transmission cooler to prevent overheating.

These simple modifications can enhance the performance and longevity of the 68RFE transmission. They are ideal for enthusiasts who enjoy working on their vehicles.


Troubleshooting Common Issues


The 68RFE transmission is known for its durability. But, like any mechanical system, it can face issues. Understanding how to troubleshoot common problems is essential. This section will guide you through the process.


Diagnostic Techniques


To start diagnosing the 68RFE transmission, use a diagnostic scanner. This tool reads error codes from the transmission control module. It helps identify the specific issue.

Check the fluid level and condition. Low or dirty fluid can cause many problems. Ensure the fluid is at the right level and clean.

Listen for unusual sounds. Grinding, whining, or clunking noises can indicate internal damage. Each noise suggests a different problem.

Perform a visual inspection. Look for leaks, worn-out parts, or loose connections. These can be easy fixes if caught early.


Identifying Wear And Tear


Wear and tear in the 68RFE transmission can lead to serious problems. Recognize the signs early to avoid costly repairs.

Burnt fluid is a common sign of wear. The fluid may appear dark and smell burnt. This indicates overheating or internal friction.

Delayed shifts can also point to wear. If the transmission takes time to shift gears, it might be wearing out.

Slipping gears are another indicator. The transmission might slip out of gear while driving. This usually means the internal components are worn.

Below is a table summarizing the signs of wear and their possible causes:

Signs of Wear Possible Causes
Burnt Fluid Overheating, Internal Friction
Delayed Shifts Worn Components, Fluid Issues
Slipping Gears Worn Clutches, Low Fluid

Keep an eye out for these signs. Early detection can save you from major repairs.


Step-by-step Repair Guide


Repairing a 68Rfe Transmission can seem daunting. But with the right guide, you can handle it with ease. This section will provide a detailed step-by-step repair guide. Follow these instructions to ensure a smooth repair process.


Tools And Equipment Needed


Before starting the repair, gather all the necessary tools and equipment. Having everything ready will make the process smoother.

  • Socket Set – Various sizes for different bolts.
  • Torque Wrench – Essential for tightening bolts to the correct specification.
  • Screwdrivers – Both flathead and Phillips.
  • Transmission Jack – To safely lift and lower the transmission.
  • Seal Puller – For removing seals without damage.
  • Drain Pan – To catch transmission fluid.
  • Cleaning Supplies – Rags, solvent, and brushes.
  • Service Manual – Specific to the 68Rfe Transmission.


Disassembly And Reassembly Procedures


Follow these steps carefully to disassemble and reassemble the 68Rfe Transmission.

  1. Disconnect the Battery – Safety first. Disconnect the battery to prevent any electrical issues.
  2. Drain the Transmission Fluid – Place the drain pan under the transmission. Remove the drain plug and let the fluid drain completely.
  3. Remove the Transmission – Use the transmission jack to support it. Disconnect all electrical connections and mounting bolts.
  4. Disassemble the Transmission – Carefully remove the transmission pan, valve body, and other internal components. Keep all parts organized.
  5. Inspect and Clean – Inspect all parts for wear or damage. Clean each component thoroughly before reassembly.
  6. Replace Worn Parts – Replace any worn or damaged parts with new ones. Ensure they match the specifications.
  7. Reassemble the Transmission – Reinstall all components in reverse order. Ensure all bolts are tightened to the correct torque specifications.
  8. Reinstall the Transmission – Use the transmission jack to position it. Reconnect all electrical connections and mounting bolts.
  9. Refill the Transmission Fluid – Add the correct type and amount of transmission fluid.
  10. Reconnect the Battery – Once everything is in place, reconnect the battery.
  11. Test Drive – Take the vehicle for a test drive to ensure everything is functioning properly.

Following this guide will help you repair the 68Rfe Transmission effectively. Always refer to the service manual for specific details and torque specifications.


Maintenance Tips For Longevity


The 68Rfe Transmission is a key part of your vehicle. Keeping it in top shape ensures smooth driving and extends its life. Below are some essential tips for maintaining your 68Rfe Transmission.


Routine Checks And Balances


Regular checks help in spotting issues early. Here are some routine checks you should perform:

  • Fluid Levels: Check transmission fluid regularly. Low fluid can cause damage.
  • Leaks: Inspect the transmission for leaks. Fix any leaks immediately.
  • Temperature: Monitor the transmission temperature. Overheating can lead to failure.
  • Shift Quality: Pay attention to how the transmission shifts. Rough shifts can signal problems.


Best Practices For Care


Following best practices can extend the life of your transmission. Here are some tips:

  1. Use the Right Fluid: Always use the recommended transmission fluid. Using the wrong type can cause damage.
  2. Change Fluid Regularly: Regularly change the transmission fluid. Fresh fluid helps keep the system clean.
  3. Install a Transmission Cooler: A cooler can help reduce heat. Lower heat reduces wear and tear.
  4. Avoid Heavy Loads: Heavy loads put extra stress on the transmission. Avoid them when possible.
  5. Drive Smoothly: Smooth driving reduces strain. Avoid rapid acceleration and hard braking.
Check Frequency Action
Fluid Levels Monthly Top up if low
Leaks Monthly Repair immediately
Temperature Every drive Monitor dashboard
Shift Quality Every drive Notice any changes


Upgrading To A 68rfe: What To Expect


Upgrading to a 68RFE transmission can bring significant benefits. This upgrade enhances performance and reliability. Understanding what to expect is essential.


Cost-benefit Analysis


Cost is a primary factor. A 68RFE transmission upgrade can be costly. Prices range from $2,500 to $4,500. Benefits include improved towing capacity, better fuel efficiency, and increased durability.

Consider long-term savings. Reduced maintenance costs and fewer repairs can save money. Also, a reliable transmission increases vehicle lifespan.

Expense Amount
Transmission Cost $2,500 – $4,500
Installation Cost $500 – $1,000
Total Initial Cost $3,000 – $5,500


Compatibility Considerations


Before upgrading, check compatibility. Ensure your vehicle supports a 68RFE transmission. Some models may need additional modifications.

Vehicle make and model are crucial. Specific vehicles may require adapters or mounts. Verify with a professional mechanic for accurate advice.

  • Check vehicle’s current transmission type.
  • Confirm engine compatibility.
  • Review additional parts needed for the upgrade.

Installation complexity varies. Some vehicles require simple swaps. Others need more extensive work. Ensure you have the right tools and expertise.

68Rfe Transmission: Ultimate Guide to Performance & Repair

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Case Studies: 68rfe Success Stories


The 68RFE transmission has proven its worth in various real-world applications. This section highlights some inspiring success stories. These case studies show the benefits of the 68RFE transmission. Let’s delve into the real-world performance and before and after comparisons of this robust transmission.


Real-world Performance


Many truck owners have shared their experiences with the 68RFE transmission. These stories highlight the transmission’s reliability and durability in demanding conditions.

  • John hauls heavy loads daily.
  • After upgrading to the 68RFE, his truck performs better.
  • No more overheating issues.
  • Smoother shifting under load.
  • Susan loves off-roading.
  • She installed a 68RFE in her truck.
  • Improved torque and power delivery.
  • Handles rough terrains with ease.


Before And After Comparisons


These comparisons show the tangible benefits of upgrading to a 68RFE transmission.

Aspect Before 68RFE After 68RFE
Performance Frequent overheating Stable temperature
Shifting Rough and delayed Smooth and quick
Towing Capacity Struggled with heavy loads Handles heavy loads easily
Fuel Efficiency Lower mileage Improved mileage

These comparisons highlight the significant improvements in key performance areas. The 68RFE transmission stands out as a reliable upgrade for various applications. Whether for heavy-duty hauling or off-road adventures, the 68RFE delivers outstanding performance and reliability.


Future Of 68rfe Transmissions


The future of 68RFE transmissions looks promising with continuous advancements in automotive technology. As the automotive industry evolves, so does the need for more efficient and reliable transmission systems. The 68RFE transmission, known for its durability and performance, is set to see significant innovations. This post explores the potential developments and the critical role of 68RFE transmissions in modern vehicles.


Innovations On The Horizon


Automotive engineers are working on several innovations to enhance the 68RFE transmission. These improvements aim to increase efficiency and reduce wear and tear. Below are some key innovations:

  • Enhanced Electronic Control Units (ECUs): New ECUs will improve shift timing and accuracy.
  • Advanced Materials: Stronger and lighter materials will be used for internal components.
  • Lubrication Technology: Better lubrication will decrease friction and heat.
  • Software Updates: Regular updates will optimize performance and adapt to driving conditions.


The Role In Modern Vehicles


The 68RFE transmission plays a crucial role in modern vehicles, particularly in heavy-duty applications. It is commonly found in trucks and commercial vehicles. Its robust design and capability to handle high torque make it ideal for these uses.

Let’s look at some specific roles of the 68RFE transmission:

Role Description
Heavy-Duty Trucks Handles high torque and load capacity efficiently.
Commercial Vehicles Provides reliable performance in demanding conditions.
Off-Road Vehicles Ensures smooth operation on rough terrains.

By integrating these transmissions, manufacturers can enhance the reliability and durability of their vehicles. This will lead to a better driving experience for users.

68Rfe Transmission: Ultimate Guide to Performance & Repair

Credit: randys-transmissions.com


Frequently Asked Questions


Is The 68rfe Transmission Good Or Bad?


The 68RFE transmission is generally reliable for light to moderate use. It can face issues under heavy load or extreme conditions. Regular maintenance is crucial to ensure optimal performance and longevity.


How Long Does A 68rfe Transmission Last?


A 68RFE transmission typically lasts between 150,000 to 200,000 miles. Proper maintenance can extend its lifespan.


What Transmission Is The 68rfe?


The 68RFE is a six-speed automatic transmission. It is commonly found in Dodge Ram 2500 and 3500 trucks. This transmission is known for its durability and performance in heavy-duty applications.


What Are The Signs Of A Failing 68rfe Transmission?


Signs of a failing 68RFE transmission include delayed shifting, slipping gears, overheating, strange noises, and fluid leaks. Regular maintenance helps avoid these issues.




The 68Rfe transmission stands as a reliable choice for many vehicle enthusiasts. Its durability and performance are top-notch. Regular maintenance ensures longevity. Investing in a quality transmission can enhance your driving experience. Choose the 68Rfe for a smoother ride and fewer mechanical issues.

Enjoy the benefits of a trusted transmission system.

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