How to Install a Mopar Performance 727 Torqueflite Transmission in Your Classic

Installing a Mopar Performance 727 TorqueFlite transmission in your classic vehicle can enhance performance and reliability. This guide will provide you with step-by-step instructions to complete the installation successfully.

Tools and Materials Needed

  • Mopar Performance 727 TorqueFlite Transmission
  • Transmission fluid
  • Torque wrench
  • Socket set
  • Wrenches
  • Transmission jack
  • Floor jack
  • Safety glasses
  • Shop manual for your classic vehicle

Preparation

Before starting the installation, ensure you have all the necessary tools and materials. It’s also important to work in a well-ventilated area and wear safety glasses throughout the process.

1. Gather Your Vehicle Information

Identify the make, model, and year of your classic vehicle. Refer to the shop manual for specific details regarding the transmission installation.

2. Prepare Your Workspace

Ensure your workspace is clean and organized. Have all your tools within reach to streamline the installation process.

Removing the Old Transmission

Before installing the new Mopar Performance 727 TorqueFlite transmission, you must remove the existing transmission. Follow these steps:

1. Disconnect the Battery

Start by disconnecting the negative terminal of the battery to prevent any electrical issues during the installation.

2. Raise the Vehicle

Use a floor jack to raise the vehicle safely off the ground. Secure it with jack stands to ensure stability while you work underneath.

3. Remove the Driveshaft

Unbolt the driveshaft from the rear differential and slide it out of the transmission. Make sure to mark the orientation for reinstallation.

4. Disconnect Linkages and Wires

Disconnect any linkages, electrical connections, and the speedometer cable from the transmission. Label these connections for easier reassembly.

5. Unbolt the Transmission

Remove the bolts securing the transmission to the engine. Support the transmission with a transmission jack while you do this.

6. Remove the Old Transmission

Carefully lower the old transmission using the transmission jack and remove it from the vehicle.

Installing the Mopar Performance 727 TorqueFlite Transmission

With the old transmission removed, you’re ready to install the new Mopar Performance 727 TorqueFlite transmission. Follow these steps:

1. Prepare the New Transmission

Ensure the new transmission is clean and ready for installation. Check that the torque converter is properly installed and secured.

2. Position the New Transmission

Using the transmission jack, carefully position the new transmission in place. Align it with the engine block.

3. Bolt the Transmission to the Engine

Secure the transmission to the engine with the previously removed bolts. Use a torque wrench to ensure they are tightened to the manufacturer’s specifications.

4. Reconnect Linkages and Wires

Reconnect all linkages, electrical connections, and the speedometer cable to the new transmission. Double-check your labels for accuracy.

5. Reinstall the Driveshaft

Slide the driveshaft back into position and secure it to the rear differential. Make sure it is properly aligned.

6. Fill with Transmission Fluid

Fill the new transmission with the appropriate transmission fluid as recommended by the manufacturer. Check the fluid level after running the engine for a few minutes.

Final Steps

After the installation is complete, follow these final steps to ensure everything is functioning correctly:

1. Lower the Vehicle

Carefully lower the vehicle back to the ground, removing the jack stands and ensuring everything is secure.

2. Reconnect the Battery

Reconnect the negative terminal of the battery. Ensure all electrical connections are secure.

3. Test Drive

Take your classic vehicle for a test drive to ensure the new transmission operates smoothly. Pay attention to any unusual noises or shifting issues.

Troubleshooting Common Issues

After installation, you may encounter some common issues. Here are a few troubleshooting tips:

  • Transmission Slipping: Check fluid levels and ensure proper installation of linkages.
  • Unusual Noises: Inspect for loose bolts or misaligned components.
  • Fluid Leaks: Examine seals and gaskets for any signs of leakage.

Conclusion

Installing a Mopar Performance 727 TorqueFlite transmission can significantly improve the performance of your classic vehicle. By following these steps carefully, you can ensure a successful installation and enjoy the benefits of your new transmission.