Here's a look at what it's like do your first T56 rebuild starting with disassembly. This job went fairly smooth, but there are issues that can come up that I didn't get to cover in this video.
So before attempting your own rebuild, please do plenty of your own research so you can be prepared for the possibilities.

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T56 Removal
   • LT1 F Body T56 Transmission Removal  

T56 Reassembly
   • Rebuilding my own F Body T56 - Part 2...  

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Service Manual: https://libertysgears.com/wp-content/...
I purchased my gear and synchro sliders through: https://ampdistributing.com/
Carbon Fiber synchro rings from: https://www.ebay.com/str/synchrotecht...

The proper 5/6 driven gear puller though difficult to find and very pricey is listed under Miller product numbers 9378, 9379 and 9382 (all three items needed for complete puller). Some people recommend fabricating your own puller taking a 3 jaw puller and extending it's reach with steel flat stock as shown here https://ls1tech.com/forums/manual-tra...

I planned on using this instead https://www.harborfreight.com/gear-pu... and increasing it's reach using all thread rod. This would have been closer in practice to the proper tool, but I never got to try it out as my gear slid off by hand. Modifying tools can be dangerous, do so at your own risk...

I used this press and it worked great. A 12 ton might work as well, but the 20 ton has a little more room to work with.
20 ton: https://www.harborfreight.com/20-ton-...
12 ton: https://www.harborfreight.com/12-ton-...
0:00 Intro
2:35 Tail Housing Removal
7:25 Main Shaft Disassembly
11:36 Reverse and 5/6 Driven Gear
17:42 Counter Shaft Extension
20:25 Main Case Removal
30:29 Shift Rail Assembly / Counter Shaft
32:26 Main Shaft / Input Shaft
33:45 Inspecting Parts for Wear
36:40 Removing First Gear
38:51 1st - 2nd Synchro Assembly
42:05 Removing 3rd Gear / Synchro Assembly
45:35 Inspecting Gears / Synchro Assemblies
#fbody #t56 #4thgen #diy