Dodge 47RE Transmission

Dodge Ram Emblem

Convert your Dodge 47RE to an Allison

Transform Your Drive: Making the Switch to an Allison 1000PK Transmission

Configure your truck

Unleash the full potential of your heavy-duty truck with the Dodge 47RE to Allison 1000PK transmission conversion. This upgrade is a game-changer, designed to deliver unmatched durability, increased towing capacity, and smoother shifting for your ride. Whether you're hauling hefty loads or navigating challenging terrains, the Allison 1000PK is built to endure, offering stellar performance, fuel efficiency, and the kind of reliability that Dodge owners have been craving. Say goodbye to frequent repairs and maintenance woes—make the switch today and experience a remarkable transformation in the way your truck operates, both on and off the road. This conversion is more than just an upgrade; it’s an investment in unmatched quality and performance.

47RE Transmission: An Overview, Key Features, and Common Concerns

Overview of the 47RE Transmission

Of course! Here is a completely distinct overview of the Dodge 47RE transmission, in the same format:

The 47RE is a four-speed automatic transmission developed by Chrysler in the mid-1990s, designed to meet the demands of high-torque applications like towing and heavy hauling. Positioned as an upgrade to the 46RE, it became standard in larger displacement Dodge trucks, such as the Ram series. The 47RE is electronically controlled, unlike its hydraulic-controlled predecessor, the 46RH, and is known for its rugged construction and ability to handle high levels of torque. This transmission featured a more advanced lock-up torque converter and improved shifting performance, which added to its popularity in larger, heavy-duty Dodge trucks.

47RE Features

Below are some key features that set the Dodge 47RE transmission apart:

  • Electronic Control: Unlike its predecessors, the 47RE was among the first Dodge transmissions to incorporate electronic controls, allowing for more precise and responsive shifting under various driving conditions.
  • Heavy Duty Performance: The 47RE was designed to handle high-torque applications, making it a standard choice for heavy-duty Dodge trucks engineered for substantial towing and hauling tasks.
  • Advanced Lock-Up Torque Converter: The 47RE features a lock-up torque converter, which enhances fuel efficiency by reducing slip at cruising speeds, a feature often demanded in heavy towing and hauling situations.
  • Robust Construction: The 47RE is built with high-strength components that contribute to its overall durability and ability to withstand the rigors of heavy-duty usage.
  • Four-Speed Automatic with Overdrive: The 47RE provides four forward gears, including an overdrive, facilitating versatile driving in both city and highway conditions.
  • Adaptable Shift Strategy: The electronic control module of the 47RE adapts shifting patterns based on load and driving conditions, ensuring optimal performance under varying demands.

The 47RE transmission is lauded for its heavy-duty capabilities and its transition into electronic control, offering a reliable solution for those in need of a strong and dependable transmission.

47RE Common Issues and Signs of Failures

Despite its heavy-duty design and capabilities, the 47RE transmission can have its own set of issues. Here are some common problems associated with this transmission:

  • Erratic Shifting Patterns: The electronically controlled nature of the 47RE can sometimes result in shifting issues due to sensor or solenoid failures.
  • Overdrive Engagement Problems: Some 47RE units suffer from issues related to engaging and disengaging the overdrive, which can result from a worn overdrive unit or electronic control issues.
  • Converter Clutch Failure: Because of its heavy-duty applications, the lock-up clutch in the torque converter can wear out and fail, leading to overheating and poor efficiency.
  • Electronic Control Module (ECM) Issues: As an electronically controlled transmission, the 47RE is susceptible to problems stemming from its ECM, which can manifest as shifting issues or complete transmission failure.
  • Fluid Leaks: Like other transmissions, the 47RE is prone to fluid leaks, which could arise from gasket failures or cracked components.
  • Noisy Operation: Excessive noise during operation, such as humming or whining, can be indicative of internal mechanical wear or low transmission fluid.
  • Delayed Gear Engagement: Slow response when shifting from park to drive or reverse may indicate problems with the hydraulic system, a worn clutch pack, or electronic issues.

These are common signs of issues with the 47RE transmission. Regular maintenance and prompt attention to issues as they arise are key to prolonging the life of this transmission. As always, consulting a professional for a thorough diagnosis is the best course of action when encountering problems with the 47RE.

Your Guide to Rebuilding, Replacing, and Upgrading to an Allison Transmission

Rebuild, Replace, Converting to an Allison

Convert to Allison

Converting to an Allison 1000PK Transmission

Undertaking the conversion from a Dodge 47RE to the Allison 1000PK transmission is not just about replacing one component for another, but rather an evolution to elevate your vehicle’s capabilities. The process is intricate and requires meticulous attention to detail. Here is a comprehensive guide to navigate you through the intricacies of this modification:

  1. Preliminary Research

    • First and foremost, ensure that the Allison 1000PK is compatible with your vehicle's specific make, model, and powertrain setup.
    • Source specialized conversion kits or aftermarket parts designed specifically for this conversion, if available.
    • Prepare a detailed inventory of all tools, parts, and additional components you will need for the conversion.
  2. Gathering Essential Components

    • Procure the Allison 1000PK transmission unit.
    • Find a bell housing that aligns with your engine and the Allison 1000PK.
    • Acquire a compatible Transmission Control Module (TCM) for the Allison 1000PK.
    • Stock up on all required wiring sets, connectors, and any adapters necessary for the swap.
    • Opt for a transmission cooler that's rated for the Allison 1000PK's requirements.
  3. Disassembly of 47RE

    • Start by disconnecting the vehicle battery for safety.
    • Safely drain out all the transmission fluid from the 47RE.
    • Detach all links, including the transmission linkage, wiring, driveshaft, and other connections.
    • Carefully remove the 47RE transmission from the vehicle chassis.
  4. Prepping and Adjustments

    • Examine your vehicle's transmission bay and make adjustments or alterations if necessary to fit the Allison 1000PK.
    • Retrofit or replace existing mounts, crossmembers, or other supporting structures if they are incompatible with the Allison 1000PK.
  5. Allison 1000PK Installation

    • With the aid of a transmission jack, carefully position the Allison 1000PK in place and secure it to the engine using the procured bell housing.
    • Ensure a secure fitment of all connections, including the mechanical linkage and any hydraulic lines.
  6. Wiring and Electronic Configuration

    • Strategically position the TCM, typically within a protected area such as the engine bay or inside the cabin.
    • Lay down the wiring harness, ensuring that every connection is tight and correctly plugged.
    • Ensure seamless communication between the TCM and the vehicle's Engine Control Unit (ECU) to guarantee optimal transmission performance.
  7. Installing the Cooling Mechanism

    • Position the transmission cooler in a location that guarantees efficient cooling, typically in front of the radiator for optimum airflow.
    • Link the transmission cooling lines, establishing a connection between the transmission and the cooler.
  8. Finalizing Drivetrain Setup

    • Depending on the length and compatibility, either modify the existing driveshaft or procure a custom-made one to suit the Allison 1000PK.
    • Firmly install the driveshaft, ensuring it aligns perfectly at both the front and rear ends.
  9. Testing and Fluid Top-Up

    • Refill the Allison 1000PK with the manufacturer-recommended transmission fluid.
    • Re-establish the battery connection.
    • Ignite the engine and run through all gear positions to ascertain their operation.
    • Embark on a test drive to confirm that the transmission shifts without hitches and that the TCM functions as intended.
  10. Tweaking and Adjustments

    • Post-test drive, carry out a comprehensive inspection for any possible fluid leaks, unusual noises, or other potential issues.
    • If necessary, make minute adjustments to ensure everything operates smoothly.

Documentation and Legalities:

  • Document all modifications made during the conversion for future reference or potential resale purposes.
  • Verify that the conversion adheres to local and federal regulations, particularly concerning emissions, safety standards, and other legal requisites.

Due to the intricate nature of this conversion, collaborating with a seasoned mechanic or a workshop with a reputation for handling transmission swaps is recommended. When executed with precision, this conversion allows you to leverage the unparalleled prowess of the Allison 1000PK transmission.

47RE Rebuild

Rebuilding the Dodge 46RH Transmission

Rebuilding a Dodge 47RE transmission is a complex and meticulous process that requires in-depth knowledge of transmission components and specialized tools. The purpose of a rebuild is to restore the transmission to its optimal functioning condition by replacing worn or damaged parts. Here's a step-by-step outline of the process:

  1. Preparation and Safety: Ensure the work area is clean, organized, and safe. Disconnect the battery of the vehicle and gather all necessary tools and parts before starting the project.
  2. Disassembly: Methodically disassemble the 47RE transmission, organizing and inspecting all components as they are removed. Document any visibly worn or damaged parts.
  3. Cleaning: Clean all the disassembled parts meticulously with a parts cleaner solution or solvent. This step is essential for exposing any concealed wear or damage.
  4. Inspection and Assessment: Examine all components, including gears, bearings, clutches, shafts, and seals for wear or damage. Use this inspection to compile a list of parts that need replacement.
  5. Acquire Replacement Parts: Based on the inspection, purchase the necessary replacement parts. This may include bearings, seals, gaskets, clutches, and potentially solenoids or valve components.
  6. Reassembly with New Parts: With precision, reassemble the 47RE transmission, replacing the worn or damaged parts with the new components. Strictly adhere to the reassembly order and torque specifications for all bolts and fasteners.
  7. Clutch and Band Adjustment: Adjust the clutches and bands according to the manufacturer’s specifications. This step is vital for the transmission to operate seamlessly and without slipping.
  8. Sealing and Gasket Installation: Install fresh seals and gaskets during reassembly to forestall any fluid leaks. Ensure all surfaces are immaculate and flat prior to installing the gaskets.
  9. Final Assembly and Inspection: After the 47RE is reassembled, rigorously double-check all components, fasteners, and settings. Confirm everything is installed accurately and torqued to the proper specifications.
  10. Reinstallation of the Transmission: Reinstall the rebuilt 47RE transmission back into the vehicle, making certain that all connections are secure and properly aligned.
  11. Refill with Transmission Fluid: After reinstallation, replenish it with fresh, clean transmission fluid to the prescribed level according to the manufacturer’s specifications.
  12. Testing: Reconnect the battery and start the vehicle. Carefully test all gears under controlled conditions. Be attentive to unusual noises and ensure that shifting is smooth, without slipping or harsh engagements.
  13. Road Test: Following the initial tests, take the vehicle for a comprehensive test drive under varied conditions. Monitor the shifting behavior of the transmission, ensuring that it operates smoothly and responsively.
  14. Final Adjustments and Checks: After the road test, revisit the fluid levels and scrutinize for any signs of leaks or abnormal noises. Make any necessary fine-tunings based on the road test results.
  15. Documentation: Maintain detailed records of the rebuild process, including parts replaced and any challenges encountered. This documentation is invaluable for future maintenance or if issues arise later.

It is important to emphasize that rebuilding a transmission is a highly technical task, typically necessitating a skilled mechanic or a very experienced DIYer. Specialized tools and manuals specific to the Dodge 47RE are usually essential. Always refer to a service manual for the most accurate and detailed guidance.

Replace 47RE

Replacing the Dodge 47RE Transmission

Replacing a Dodge 47RE transmission involves removing the old unit from the vehicle and installing a new or rebuilt one. This is a substantial project that requires a strong understanding of automotive mechanics, as well as access to the right tools. Here's a step-by-step guide to replacing a Dodge 47RE transmission:

  1. Setup and Preparation

    • Organize a clean, spacious work area.
    • Assemble all required tools, including a transmission jack, socket set, and various hand tools.
    • Confirm availability of the replacement 47RE transmission.
  2. Procure Necessary Components

    • Source a replacement 47RE transmission, either new or rebuilt.
    • Purchase a compatible torque converter for your engine.
    • Secure fresh seals, gaskets, and transmission fluid filter.
  3. Prioritize Safety

    • Disconnect the vehicle’s battery to prevent electrical hazards.
    • Safely elevate the vehicle using jack stands and wheel chocks to ensure stability.
  4. Empty the Transmission Fluid

    • Position a drain pan beneath the transmission and remove the drain plug to empty the fluid.
  5. Detach Driveshaft and Controls

    • Unfasten the driveshaft from the transmission.
    • Detach gear shift controls and related components.
  6. Disconnect Wiring and Fluid Lines

    • Detach all electrical connectors, such as those for sensors, from the transmission.
    • Separate the transmission cooler lines.
  7. Extract the Old Transmission

    • Position a transmission jack beneath the 47RE to securely hold its weight.
    • Undo the bolts that affix the transmission to the engine and the mounting bolts.
    • Cautiously lower and remove the transmission from the vehicle.
  8. Assess and Ready the Replacement Unit

    • Examine the replacement 47RE transmission for potential problems and ensure it is clean and prepped for installation.
    • Mount a new torque converter, seals, and gaskets as needed.
  9. Integrate the New Transmission

    • Utilize the transmission jack to carefully raise the replacement 47RE into position.
    • Align with the engine and fasten securely with the designated bolts, tightening to the manufacturer’s torque specifications.
  10. Reestablish Electrical and Fluid Connections

    • Reconnect electrical connectors and reattach the cooler lines to the transmission.
  11. Reinstall Driveshaft and Control Linkages

    • Reinstate the driveshaft and reconnect it to the transmission.
    • Reattach gear shift controls and related hardware.
  12. Add New Transmission Fluid

    • Once the transmission is securely in place, refill it with the specified transmission fluid to the appropriate level according to manufacturer’s guidance.
  13. Power Up and Initial Testing

    • Reconnect the vehicle’s battery.
    • Start the vehicle and methodically test all gears in a controlled environment. Be alert for abnormal sounds and confirm smooth, slip-free shifting.
  14. On-Road Evaluation

    • After successful preliminary tests, conduct a thorough test drive under diverse conditions, monitoring the transmission's shifting behavior to ensure reliable, responsive operation.
  15. Inspect for Leakage and Final Review

    • Following the road test, scrutinize the transmission and connections for leaks or loose components, making adjustments as informed by road test observations.
  16. Record the Process

    • Maintain comprehensive records of the transmission replacement, including dates, parts replaced, and any anomalies noted. This documentation may prove invaluable for subsequent maintenance or repairs.

Please be advised that replacing a transmission is a significant and complex undertaking. It is often best delegated to a professional mechanic or an individual with extensive automotive repair knowledge. Always consult a service manual for the most precise and detailed information specific to the Dodge 47RE transmission and your particular vehicle.

Benefits of converting to an Allison 1000PK Transmission

Converting from a Dodge 47RE to an Allison 1000PK transmission in a heavy-duty or performance vehicle can offer several benefits. The Allison 1000 series, known for its durability and performance, is often used in various heavy-duty applications, including commercial trucks, buses, and RVs. Below are the main benefits of making this conversion:

Enhanced Durability and Reliability

The Allison 1000PK is designed for heavy-duty applications and has a reputation for extreme durability and reliability. It's built to handle high torque and horsepower levels consistently, whereas the Dodge 47RE, though robust, may not be as enduring under severe stress.

Improved Performance

The Allison 1000 series transmissions are designed with performance in mind. They provide smooth, precise shifting, which can make for a more comfortable and controlled driving experience. The transmission can adapt to various driving conditions, optimizing shift patterns for efficiency and performance.

Increased Towing Capacity

For those who require significant towing capabilities, the Allison 1000PK often offers higher towing capacity compared to the 47RE. Its construction is suited for heavy loads, making it a popular choice for towing trailers, boats, or heavy equipment.

Enhanced Fuel Efficiency

The Allison 1000PK can contribute to improved fuel efficiency. Its design allows for optimal engine operating ranges, which can result in lower fuel consumption in comparison to the Dodge 47RE.

Adaptive Learning Capabilities

The Allison 1000 series transmissions feature adaptive learning capabilities, allowing them to adjust to the driver’s habits and continuously optimize performance. This leads to smoother shifts and better overall vehicle responsiveness.

Ease of Maintenance

The Allison 1000PK is known for its relatively low maintenance requirements. It is designed to have longer service intervals and, in many cases, may require less frequent and less costly repairs than a Dodge 47RE.

Strong Aftermarket Support

The Allison 1000 series has strong aftermarket support, with a wide range of parts and upgrades available. This makes it easier to service, modify, and maintain the transmission, as opposed to the Dodge 47RE for which parts may be less abundant.

Enhanced Resale Value

Vehicles equipped with an Allison 1000 series transmission may have a higher resale value. The Allison name is often associated with quality and durability, which can be a selling point for potential buyers.


The Allison 1000PK is versatile and can be used in a wide range of applications, from daily driving to heavy-duty commercial use. This makes it a flexible option for various types of vehicles and uses.

Safety Features

The Allison 1000PK often comes with advanced safety features, such as engine and output speed sensors and controls that can help prevent excessive downshifting and over-revving, which can protect both the engine and transmission from potential damage.

What's included in an Allison Conversion kit?

We provide everything you will need to get the swap done right

Duramax with Allison Transmission
    • Kit Includes
    • Transmission
      Torque Converter
      Wiring Harness
      Flex Plate adapter
      Transfer Case
      Mounting Kit
      Cooling Kit
      Digital Display
      Allison TCM
      CAC TCM
Allison 1000PK Transmission

Allison 1000PK Transmission

Upgrade your vehicle's capabilities with the esteemed Allison 1000PK Transmission. You have the option to either include this component in your kit purchase or use your own pre-acquired Allison 1000PK transmission. To cater to your needs, we also provide transmission rebuilding services. Explore a comprehensive selection of other Allison transmissions here that we can expertly convert.

How to determine the Right Torque Converter

Maximizing Performance: Using Tire Diameter and Gear Ratio Calculations to Choose the Ideal Torque Converter

How to determine the right torque converter


Converting your Dodge Ram's transmission to an Allison can result in numerous benefits including improved durability, enhanced towing capability, increased fuel efficiency, and smoother gear shifts, thus optimizing your vehicle's performance.

Most Dodge Ram models can benefit from an Allison transmission conversion, but it's advisable to consult with a specialist to ensure compatibility with your specific model.

Yes, with the right adapters, your existing Dodge Ram transfer case can be utilized in an Allison conversion.

The Allison 1000 series is a popular choice for Dodge Ram vehicles due to its reliability and performance, but the best option depends on your particular needs and vehicle model.

The conversion process involves removing your Dodge Ram's current transmission, fitting the Allison transmission with the necessary adapters, and installing it. The wiring harness, TCM, and other components are also adjusted accordingly.

Yes, an Allison transmission is designed to provide smoother shifts, increased durability, and better fuel efficiency, all of which contribute to improved vehicle performance.

An Allison conversion kit typically includes components such as the transmission (if chosen), TCM, torque converter, wiring harness, adapters, and other necessary parts for the conversion.

You have the option to either provide your own Allison transmission or include it with your conversion kit purchase.

While it's possible for experienced individuals to do the conversion, it's generally recommended to hire a professional to ensure the job is done correctly and safely.

The conversion time can vary based on the vehicle and the specific conversion kit. On average, it might take a few days to complete.

An Allison conversion could affect your vehicle's warranty depending on the specific terms of your warranty agreement. We recommend checking with your warranty provider before proceeding with the conversion.

If you face any problems after the conversion, it's best to contact your conversion specialist for troubleshooting assistance or potential service needs.

Yes, an Allison transmission from another vehicle can be used, provided it's compatible with your Dodge Ram model. Ensure to consult with your conversion specialist before proceeding.

Yes, we do offer rebuilding services for Allison transmissions, ensuring your transmission is operating at peak performance.

The cost can vary significantly depending on the specific Allison model, whether you're providing the transmission or purchasing it as part of the kit, and any additional services required. Please contact us directly for a more precise estimate.

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