TH400 Build Series - Bushing Replacement

See what it takes to replace the bushings on the GM TH400 automatic transmission.
Replacing some of the bushings on this unit is pretty straight forward. However, there are a number of bushings that are not as easy to tackle. Over-looking some seemingly minor details can lead to problems during the build, and cause a repeat transmission failure.
Learn about SOPs (standard operating procedures), tips/tricks, and upgrades.

TH400 Bushings:
1). Pump bushing.
2). Stator bushing.
3). Direct Drum bushing.
4). Center Support bushing.
5). Intermediate Shaft bushing.
6). Front Planet bushing.
7). Output Shaft bushing.
8). Case bushing.
9). Extension Housing bushing.

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How to read a DIAL CALIPER:
   • How to read a DIAL CALIPER  

*****TH400 Build Series*******
TH400 Teardown:    • TH400 Rebuild Series - Teardown (Disassembly)  
TH400 Inspection:    • TH400 Rebuild Series - Inspection (A succe...  
TH400 Building Clutch Drums:    • TH400 Build Series - Building Clutch Drums  
TH400 Building Clutch Drums (Continued):    • TH400 Build Series - Building Clutch Drums...  
TH400 Bushings: You're currently watching it.
TH400 Prepping Case for Assembly:    • TH400 Build Series - Prepping Case for Ass...  
TH400 Planetary Gear Set - Assembly & Installation:    • TH400 Build Series - Planetary Gear Set (A...  
TH400 Intermediate Clutch, Band, Direct & Forward Drums:    • TH400 Build Series - Installing Intermedia...  
TH400 Pump + Front End-Play:    • TH400 Build Series - Pump + Front End-Play  
TH400 Valve-Body + Servos:    • TH400 Build Series - Valve-Body + Servos  
TH400 Filter + Pan + Modulator + Governor + Speedo:    • TH400 Build Series - Filter + Oil Pan + Mo...  
TH400 Different Cases (Chevy vs BPO): Coming Soon!


RESOURCES:
TH400 - Parts, tools, & supplies:
https://southpawautoworks.com/th400-b...


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Disclaimer:
This video is for educational and entertainment purposes only. Always follow proper safety procedures and consult a qualified technician before attempting any automotive work. Use this information at your own risk. Questions and discussion are welcome, but I do not provide professional repair advice or one-on-one diagnostics. Proper diagnosis requires a hands-on inspection by a certified technician. Always verify that any tools, parts, or procedures are appropriate for your specific situation. These videos are here to build confidence and clarity — but the responsibility for repairs lies with you. No warranty or guarantee is expressed or implied.

All video content is the intellectual property of Southpaw Autoworks LLC and may not be reproduced without written permission.