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Looking for Trans Rebuild Info

Okay, Trannyman, if I may. Let me ask this then. Lets say I have a new 4th clutch hub that has not been treated. Can I get it treated or how would one go about doing so.

The reason I ask, is that the middle of last year when my tranny problem first showed its head, I bought what I was told was a hardened shaft in preparation for rebuilding. However the splines were not discolored or anything like it had been heat treated. So either I have a hub from a newer tranny or it isnt hardened and I want to be sure it is before it even catches the vapors of tranny fluid of my transmission.
 


This is DAVE lol this two people thing gets cOnfuZInG!!!

I have rebuilt numorous 02 trans's and none of them had the hardened shafts. I even had an 04 Comp G trans that I believe may have been a GM test trans and all of the parts were cast in 02 and it even had the old non hardened shaft. Most of of the 03 and all 04+ that I have seen have the hardened shaft. Scotty the new ones from GM through the parts counter or out of a late trans have the discolored/ heat treated splines so if yours are shiny fresh machined looking then they are not heat treated. There was a lot of that stuff floating around a while back as it was old stock. One of my suppliers buys a lot of stuff in bulk that is OE trans company old stock and overflow and they were selling the old shafts brand new for around $20 but whats the point unless you plan to treat it on your own, its gonna fail too down the road. As far as heat treating I dont know where to point you. We have places in town that specialize in heat treating metals but I have never used them so dont know what the cost would be, but you should justify that before spending the money on it and maybe just go the route of a new treated one.
 
Gaaaad. I thought something was funny there. Oh well, guess I'll be getting a new one from you then. Sometimes I just hate you and all your great information.
 
OK, so what I think I hear is that it's normal for only the splines to be hardened.

I also think I hear that I can order a normal 4th gear clutch hub for a 03/04 grand prix and get a hardened one that way. Not that it would be any less expensive, but that would probably work, wouldn't it?
 
Only the small splined end is what is heat treated, the rest of the shaft has a bare machined finish while the splines will be dark blue/black in color. I dont believe you can buy a non hardened one at all from GM and the number will have a replacement number for the newer part in the parts counter system so even if you order one for a 97 trans it will be the hardened part.
 


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