How To Rebuild Turbo 350 Transmission

How to Rebuild a Turbo 350 Transmission: A Comprehensive Guide

The Turbo 350 transmission, known for its durability and relatively simple design, was a popular choice in many classic muscle cars and trucks. However, even the toughest transmissions eventually wear out and require a rebuild. This guide will walk you through the process, providing a step-by-step approach for rebuilding your Turbo 350. This is a complex undertaking and requires mechanical aptitude and the right tools. If you're not comfortable with automotive repair, consider seeking professional help.

Tools and Materials You'll Need

Before you begin, gather the necessary tools and materials. This list isn't exhaustive, but it covers the essentials:

• Transmission jack: Essential for safely supporting the transmission.
• Torque wrench: Crucial for tightening bolts to the manufacturer's specifications.
• Various sockets and wrenches: A complete set will be necessary.
• Pry bar: Useful for separating parts.
• Soft-faced mallet: For gently tapping parts apart.
• Clean work area: Keep your workspace organized and clean to prevent damage to parts.
• Rebuild kit: This will contain all the necessary seals, gaskets, filters, and clutch friction material. Ensure you get a kit specifically designed for the Turbo 350.
• Transmission fluid: Use the correct type and amount specified in your vehicle's manual.
• Shop rags: Plenty of clean rags are essential for keeping parts clean.
• Gloves: Protect your hands from grease and oil.
• Service manual: A detailed service manual is invaluable, providing diagrams and torque specifications.

Step-by-Step Guide to Turbo 350 Transmission Rebuild

This guide provides a general overview. Consult your service manual for precise instructions and torque specifications.

1. Removal and Disassembly

• Disconnect the transmission: Remove the driveshaft, cooler lines, shift linkage, and any other components connected to the transmission.
• Remove the transmission: Carefully lower the transmission using a transmission jack.
• Disassemble the transmission: This involves removing the valve body, separating the case halves, and removing all the internal components, including clutches, bands, and planetary gears. Take photos and make notes as you go to help with reassembly.

2. Inspection and Cleaning

• Inspect all parts: Carefully examine each component for wear, damage, or breakage. Replace any worn or damaged parts.
• Clean all parts: Thoroughly clean all parts using a parts cleaner. Ensure all parts are completely dry before reassembly.

3. Reassembly

• Install new seals and gaskets: Install all new seals and gaskets included in your rebuild kit.
• Reassemble the internal components: Carefully reassemble the internal components in the correct order. Refer to your service manual for precise instructions.
• Install the valve body: Carefully install the valve body, ensuring all passages are clear.
• Reinstall the transmission: Carefully raise the transmission back into place using the transmission jack and reconnect all components.

4. Testing and Adjustment

• Fill with transmission fluid: Fill the transmission with the correct type and amount of transmission fluid.
• Check for leaks: Inspect for any leaks around the transmission case and connections.
• Test drive: Test drive the vehicle and monitor the transmission's operation. Adjust linkages if necessary.

Important Considerations

• Cleanliness is crucial: Keep your workspace and components clean to prevent contamination.
• Torque specifications: Always use a torque wrench and adhere to the manufacturer's torque specifications.
• Proper lubrication: Use the correct transmission fluid and ensure proper lubrication of all components.
• Professional help: If you are unsure about any step, seek professional help from a qualified transmission mechanic.

Rebuilding a Turbo 350 transmission is a challenging but rewarding project. By carefully following these steps and consulting a service manual, you can successfully rebuild your transmission and extend the life of your vehicle. Remember safety first, and don't hesitate to seek professional help if needed. Good luck!