No problem at all, man. It's good to get the technical deets on how the titles are branded... may save me some money
![Wink :wink:](./images/smilies/wink.gif)
I haven't made much of a habit of buying cars for which that stuff matters, but I'd like to elevate my acquisitions, which means elevating my game to acquire them at reasonable prices. (If only I'd jumped on that $2K rusty bare M3 shell I could have snagged a couple of years ago...)
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TR-6060 madness:
My rear housing is from a C
5 'Vette. In order to install it onto a TR-6060, it needs to have the boss for the layshaft bearing welded up and remachined for the one-piece layshaft, rather than the T56's two piece layshaft. That's no big, as the market offers this service.
The Corvette rear housing contains the last bearing on the output shaft as well as the transmission output shaft oil seal. It *also* holds the differential *input* oil seal, which is installed about 1/4" away from the output seal, with the two seals face to face. There's a weep hole drilled into the trapped volume as a tell-tale which will drip if either seal leaks.
The Borg Warner T-case already has an input seal, so I can leave the differential input seal (nomenclature: output shaft outer seal) out of the assembly entirely without adverse effects. The output bearing and the inner seal both run on journals that are the same diameter as the 32 spline major diameter. The outer seal runs on a smaller journal than the inner seal... I have no idea why.
This means that all one has to do to fit a 32 spline output shaft through the Vette rear housing is just leave the outer seal out of the assembly. Awesome.
Now I need to get onboard with the 2016 (now 2017?) group buy for the 4472 32 spline input shaft, measure how deep its splines are, determine the overall length and spline length I require, then give those specs to a shop that can make the custom shaft. Sweet. Haven't saved any money, but at least now I know what I need.
The outer seal PN is 12455045 (
http://www.wholesalegmpartsonline.com/p ... 55045.html )
The inner seal PN is 19206242(
http://www.wholesalegmpartsonline.com/p ... 06242.html )
However, for a different gear ratio set (Z06 maybe?) a different part number is shown, but called an o-ring seal: 89059457 (
http://www.wholesalegmpartsonline.com/p ... 59457.html ) That *might* be the large o-ring that seals the transmission rear housing to the differential rear housing, but I don't know why it would be Z06 only or why it would be called out as an alternate for the shaft seal... Don't ever change, GM.
Here's the rear housing parts breakdown:
http://www.wholesalegmpartsonline.com/s ... gory=19405