Quote:
Originally Posted by mrein3
Sadly no. Your transfer case has a ten spline input shaft. The auto has a 28 spline input. You need a t-case, adapter, and th350 from a donor. The good news is everything else bolts up. Your old drive shafts. Same differentials.
You will need an auto steering column.
The t-case/adapter/tranny is truly a drop the manual stuff and bolt in the auto stuff job.
That stuff is heavy! When I did it I was pals with a guy that had a shop. We did it off hours, on a hoist. We bolted the case/adapter/tranny together on the ground. Put that assembly on a tranny jack with a cherry picker. Then with lots of hands holding things steady used the tranny jack to put it in place in the truck.
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No offense but thats not true. The 205 from a 465 and a th350 can be interchanged quite easily with the correct adaptor and the correct input shaft. No need to replace the case itself when you can get the input shaft and adaptor brand new from the aftermarket. You can easily get by with just a 4x4 th350 if you have trouble finding a whole 350/205 complete setup. Also note the input shaft swap isn’t necessary either because advance adaptors and others make a conversion sleeve that joins the fine and coarse splines, so that is an option too. My personal preference is to swap the gears because the 10 spline setup isn’t as strong as the 27. The th400 GM 205 is the only GM spec 205 bare case that is physically different than the other GM 205s. It has a larger input bearing but can still be made to work to the the other GM applications. Here’s a few links.
https://www.advanceadapters.com/th35...-10spl-coupler
https://www.advanceadapters.com/4847
https://www.advanceadapters.com/5188 this should be the input gear if memory serves me right. It’s been a while since I messed with a th350 spec 205.