Thread: 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.

I thought it was mid 01 and up that had the hardened shaft stock

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.

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.