Dodge 48RE w/ Throttle Valve Actuator (TVA) Transmission

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Convert your Dodge 48RE TVA to an Allison

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

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Upgrade your driving experience with a seamless transition from the Dodge 48RE transmission to the superior Allison 1000PK. This renowned conversion offers you unparalleled durability and performance, thanks to the Allison's reputation for handling high horsepower applications with ease. With the integration of the Throttle Valve Actuator (TVA), you gain precise control over your transmission's shifting, resulting in smoother and more responsive acceleration. Say goodbye to the common issues of the 48RE and elevate your ride to the next level of reliability and power that the Allison 1000PK provides. Don't just drive—dominate the road with this exceptional transmission conversion.

48RE TVA Transmission: An Overview, Key Features, and Common Concerns

Overview of the 48RE w/ Throttle Valve Actuator Transmission

The Dodge 48RE transmission, equipped with a Throttle Valve Actuator (TVA), is a robust four-speed automatic transmission engineered to handle the substantial torque of the Cummins turbodiesel engine. Originally designed for use in Dodge Ram 2500 and 3500 series trucks, this transmission is known for its durability and its capability in heavy-duty applications, especially when hauling or towing large loads. The addition of the TVA, an electronic component that controls hydraulic pressure, helps to optimize shift quality and timing, resulting in a smoother and more fuel-efficient driving experience.

As a descendant of the legendary A518/46RE family of transmissions, the 48RE is built with a combination of rugged components and advanced engineering. Its three planetary gear sets and hydraulic controls make this transmission one of the most formidable in the Dodge lineup. The TVA replaces the traditional throttle valve cable, bringing the advantages of electronic control and precision to this well-regarded transmission, thereby enabling it to adapt to a wide range of driving conditions and demands smoothly.

However, in an era where six-speed and higher automatic transmissions are becoming standard, the four-speed 48RE might feel a bit dated to some drivers. It caters to those who need a tried-and-true workhorse — drivers who prioritize strength and reliability over cutting-edge features. For those who are satisfied with fewer gears and who want a transmission built to endure heavy demands, the Dodge 48RE with TVA remains a reliable choice.

Dodge 48RE w/ TVA Features

The Dodge 48RE with TVA is engineered to meet the needs of heavy-duty truck applications, pairing particularly well with Cummins turbodiesel engines in Dodge Ram 2500 and 3500 series trucks. Here are the key features that distinguish this transmission:

  • High Torque Capacity: Designed to handle the high torque output of diesel engines, this transmission is a stalwart companion for towing and hauling.
  • Throttle Valve Actuator: The TVA brings electronic control to the 48RE, enabling precise control over hydraulic pressure and ensuring optimal shift timing and quality under various conditions.
  • Durable Construction: With its robust components, including a reinforced case to minimize flex, the 48RE is built to withstand the rigors of heavy-duty usage.
  • Hydraulic Control System: Designed with a fully hydraulic control system for pressure modulation, this ensures reliable and consistent gear shifts.
  • Lock-Up Torque Converter: Provides better fuel efficiency and cooling, and is capable of handling the high torque output of diesel engines.
  • Aftermarket Support: Given its place in Dodge’s heritage, there is a wide range of aftermarket parts and upgrades available for the 48RE, allowing owners to customize and further enhance their transmission’s performance.

In summary, the Dodge 48RE transmission with TVA is a robust and reliable choice designed to meet the rigorous demands of heavy-duty truck applications. Its features are crafted to offer drivers enduring performance and significant towing capacity under a multitude of conditions.

Dodge 48RE w/ TVA Common Issues and Signs of Failures

Despite its rugged construction and capability, the Dodge 48RE transmission with TVA, like any mechanical component, can experience issues over time. Here are some common problems associated with this transmission, along with signs that it might be failing:

  • Solenoid Issues: Problems with the transmission’s solenoids can lead to shifting issues and poor performance. Symptoms might include erratic shifting or the transmission getting stuck in a particular gear.
  • Worn Bands and Clutches: These components can wear out due to heavy use, leading to slippage during shifting.
  • Overheating: Heavy towing and hauling can cause excessive heat, which is one of the most common killers of transmissions. Overheating can lead to warped components, fluid breakdown, and eventual transmission failure.
  • Valve Body Problems: The valve body, which controls the flow of hydraulic fluid, can develop issues that affect shifting and overall performance.
  • Throttle Valve Actuator Failures: Being an electronic component, the TVA can fail due to issues like wiring problems or internal faults, affecting shift quality.

Regular maintenance, including the use of proper transmission fluid and timely replacement of worn components, can significantly extend the life of a Dodge 48RE transmission with TVA and prevent many of these issues.

If you experience any of these symptoms, it is advisable to consult with a professional mechanic or transmission specialist. Early diagnosis and repair can prevent a minor issue from turning into a significant, costly problem.

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

Converting from the 48RE TVA to an Allison 1000PK transmission is a significant undertaking, involving extensive mechanical knowledge, specialized equipment, and a dedicated commitment of time and resources. The 48RE is a four-speed automatic transmission commonly found in Dodge Ram trucks, while the Allison 1000PK is a six-speed automatic transmission often utilized in heavy-duty applications. Making this conversion means transitioning from a transmission designed for specific types of Dodge trucks to one designed for different power outputs and use cases. Here's an outline of the steps involved:

  1. Research and Planning

    • Determine the compatibility of the Allison 1000PK with your vehicle's engine and drivetrain.
    • Investigate the need for a custom adapter or plate to connect the Allison to your engine.
    • Create a complete list of required parts, tools, and estimated costs.
  2. Acquire Necessary Parts

    • Purchase the Allison 1000PK transmission.
    • Acquire a new or modified bell housing compatible with your engine.
    • Obtain a suitable transmission control module (TCM) for the Allison.
    • Purchase required wiring harnesses, adapters, and connectors.
    • Source an upgraded or suitable transmission cooler.
  3. Removal of 48RE TVA

    • Disconnect the battery.
    • Drain the transmission fluid.
    • Disconnect the transmission linkage, driveshaft, and any associated wiring or hydraulic connections.
    • Remove the 48RE TVA transmission from the vehicle.
  4. Preparation and Modification

    • Assess and modify the vehicle’s transmission tunnel for adequate space for the Allison 1000PK.
    • Install or fabricate new mounts, crossmembers, or transmission mounts as needed.
  5. Install the Allison 1000PK

    • Align the new transmission using a transmission jack and secure it to the engine with the compatible bell housing.
    • Ensure all mechanical linkage or hydraulic lines are securely connected, if applicable.
  6. Electronics and Wiring

    • Mount the TCM in an appropriate location, typically inside the vehicle's cabin or engine bay.
    • Install and secure the wiring harness, ensuring all connections are proper.
    • Integrate the Allison’s electronics with the vehicle's existing electrical system, ensuring correct communication between the TCM and the engine control unit (ECU).
  7. Cooling System Installation

    • Mount the transmission cooler in a position that ensures optimal airflow.
    • Connect the transmission cooling lines between the Allison 1000PK and the cooler.
  8. Drive Shaft and Final Connections

    • Modify the existing driveshaft or procure a custom one based on length adjustment requirements.
    • Install and align the driveshaft, securing connections at both ends.
  9. Fluids and Testing

    • Fill the Allison 1000PK with the recommended transmission fluid.
    • Reconnect the battery.
    • Start the vehicle and test all gear positions for proper operation.
    • Perform a thorough test drive, ensuring the transmission shifts smoothly and the TCM functions correctly.
  10. Final Adjustments

    • Inspect for leaks, noises, or irregularities after the test drive.
    • Adjust the linkage, wiring, or other components as needed for optimal operation.

Documentation and Legal Considerations:

  • Document all changes made to the vehicle for future reference or resale.
  • Verify compliance with local regulations, including emissions, safety, and other legal requirements related to the conversion.

Given the intricate nature of this conversion, it is strongly advised to consult with a professional mechanic or shop experienced in transmission swaps. When performed correctly, this conversion can equip your vehicle with the enhanced reliability and performance capabilities of the Allison 1000PK transmission.

48RE TVA Rebuild

Rebuilding the Dodge 48RE TVA Transmission

Rebuilding the 48RE TVA transmission, a robust and commonly used four-speed automatic transmission in Dodge Ram trucks, is a comprehensive and detailed task. This process involves disassembling the transmission, inspecting all components, replacing worn or damaged parts, and reassembling the unit with precision. Properly rebuilding a transmission can extend its life significantly and improve the performance and reliability of the vehicle. Here's an outline of the steps involved:

  1. Preparation and Assessment

    • Gather all necessary tools, including a transmission rebuild kit.
    • Consult a service manual specific to the 48RE for guidance and torque specifications.
    • Clean and organize a workspace, ensuring it is free of contaminants.
  2. Transmission Removal

    • Disconnect the battery.
    • Drain the transmission fluid.
    • Remove the transmission from the vehicle according to the service manual.
  3. Disassembly and Inspection

    • Carefully disassemble the transmission, organizing and labeling parts.
    • Inspect all components for wear, damage, or any irregularities.
    • Determine which parts need replacement and which can be reused.
  4. Cleaning and Preparation

    • Clean all reusable components thoroughly, ensuring they are free from contaminants and debris.
    • Prepare new parts from the rebuild kit for installation.
  5. Reassembly

    • Follow the service manual to reassemble the transmission meticulously, installing new parts as needed.
    • Ensure all components are installed correctly and torqued to specification.
  6. Testing and Adjustment

    • With the transmission reassembled, perform a bench test to ensure all components are operating as intended.
    • Make any necessary adjustments to the valve body, bands, or other components as outlined in the service manual.
  7. Installation and Fluids

    • Install the rebuilt transmission back into the vehicle.
    • Fill the transmission with the recommended fluid type and quantity.
    • Reconnect the battery.
  8. Road Testing and Monitoring

    • Start the vehicle and check for proper operation of the transmission in all gear positions.
    • Take the vehicle for a test drive, carefully monitoring shift patterns, noises, and overall performance.
    • Check for leaks and resolve any issues identified during the road test.
  9. Final Adjustments and Documentation

    • Make any final adjustments to the transmission as necessary based on the road test.
    • Document the rebuild process, including parts replaced and any issues encountered and resolved.

Safety and Compliance Considerations:

  • Always prioritize safety, using proper tools and following best practices to avoid injury.
  • Dispose of old transmission fluid and any replaced components in accordance with local and environmental regulations.

Due to the technical nature of a transmission rebuild, it is highly recommended to undertake this process with a solid understanding of automotive mechanics, or to consider seeking the services of a professional. When executed properly, rebuilding the 48RE TVA transmission can restore it to near-new condition, offering many more miles of reliable service.

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Replacing the Dodge 48RE TVA Transmission

Replacing the transmission in a vehicle is a substantial undertaking, often necessary when the existing unit is too damaged or worn to be rebuilt cost-effectively. The process involves removing the old transmission and installing a new or refurbished unit. The following steps outline this procedure in detail:

  1. Preparation and Assessment

    • Determine the type and specifications of the replacement transmission needed for the vehicle.
    • Acquire a new or professionally refurbished transmission that is compatible with the vehicle's make, model, and engine.
    • Gather all necessary tools, including a transmission jack, and secure a clean, organized workspace.
  2. Removal of the Old Transmission

    • Disconnect the vehicle’s battery.
    • Drain the existing transmission fluid and dispose of it responsibly.
    • Disconnect and remove the old transmission from the vehicle as per the service manual instructions, paying careful attention to electrical connections, linkages, and mounts.
  3. Preparing the New Transmission

    • Inspect the replacement transmission for any shipping damage and ensure it is clean and ready for installation.
    • Compare the new unit with the old one to confirm they are identical or compatible models.
  4. Installing the New Transmission

    • Carefully position the replacement transmission using a transmission jack and align it with the engine.
    • Secure the new transmission to the engine and the vehicle frame with the appropriate bolts and mounts, torqued to specification.
    • Reconnect any electrical connections, hydraulic lines, and mechanical linkages.
  5. Reconnecting and Refilling

    • Install the driveshaft, ensuring it is correctly aligned and securely connected at both ends.
    • Fill the new transmission with the recommended type and quantity of transmission fluid.
    • Reconnect the vehicle's battery.
  6. Testing and Monitoring

    • Start the vehicle and check for proper operation of the transmission in all gear positions, listening for unusual noises.
    • Take the vehicle for a test drive, carefully monitoring the transmission’s shifting patterns, responsiveness, and overall performance.
    • Check for any leaks and resolve any issues identified during the test drive.
  7. Final Adjustments and Documentation

    • Make any final adjustments necessary based on the test drive feedback, such as linkage or cable adjustments.
    • Document the replacement process, including the make, model, and source of the replacement transmission, and any issues encountered and resolved during installation.

Safety and Compliance Considerations:

  • Always prioritize safety when working with heavy components, using proper tools and following best practices to avoid injury.
  • Ensure that the replacement transmission complies with all local and environmental regulations, including emissions standards.
  • Dispose of the old transmission and fluids in accordance with local and environmental regulations.

Replacing a transmission is a complex task, often best handled by a professional mechanic or someone with substantial automotive experience. When completed correctly, a transmission replacement can revitalize a vehicle, offering renewed performance and extending its useful life significantly.

Benefits of converting to an Allison 1000PK Transmission

Making the move to an Allison 1000PK transmission is akin to stepping into a new era of driving experience. Known for its remarkable resilience, exceptional performance, and adaptable nature, the Allison 1000PK has become a gold standard in the world of automatic transmissions. For drivers and fleet managers alike, considering this conversion isn't just about replacing a component—it’s about substantially upgrading a critical aspect of a vehicle’s operation. Here, we explore the multifaceted benefits of making this transformative switch.

Unmatched Durability and Longevity

Allison 1000PK transmissions are engineered for exceptional resilience, with a design that significantly outlasts many other transmission types. Its robust construction and high-quality materials translate into a longer lifespan for your transmission, minimizing downtime and reducing long-term maintenance costs.

Superior Towing and Payload Capabilities

The Allison 1000PK excels in situations demanding high torque and power. Whether you’re hauling heavy trailers, operating a commercial vehicle, or just need a transmission that won’t back down under load, this unit offers unmatched towing and payload capabilities that make tough jobs seem effortless.

Smooth and Responsive Driving Experience

One of the hallmarks of the Allison 1000PK is its ability to deliver exceptionally smooth and seamless shifting. This equates to a more comfortable and controlled driving experience, making both short commutes and long hauls more enjoyable and less taxing on the vehicle’s engine.

Advanced Adaptive Shift Technology

The Allison 1000PK features sophisticated adaptive shift technology, which adjusts transmission behavior based on driving conditions and driver input. This intelligent system optimizes fuel efficiency and performance, and it continuously adapts to ensure the best possible driving experience under any conditions.

Ease of Maintenance and Global Support

Known for its straightforward and modular design, the Allison 1000PK is often easier and more cost-effective to service than other transmissions. In addition, Allison's extensive global network of service and parts centers ensures that expert help and components are always within reach, no matter where your travels take you.

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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