Does anybody know were I can purchase a high performance hardened input assembly for a 4l60e and about how much they cost. I checked a few of the sponsers sites but they didn't list a parts price list.

 

Do you just want the hardened one or a billet model

you can get the hardened one from GM it is used in the 4l65-e

 

How much of a difference is there strength wise between the gm one and the billet one and is it worth the price difference.

 

i would go with the torque drive package, hardened input shaft and special drum

i have had this in my 10 sec z28 4l60e for 3 years now with no problems

this one is for early style 4l60e, you can get them for the ls1 style also

http://cgi.ebay.com/ebaymotors/700R4...mZ140077038677

 

That is basically what I am looking for, just curious if any of the sponsers sell them and how much they are.

 

I, along with some transmission builders do not like the "Torque Drive" package. Their quality is poor. True they have had some success, but the stock input shaft does quite well in the vast majority of cases. I have them in many 9, 10, & 11 second vehicles without the input shaft itself ever presenting a problem, in fact I have never had a input shaft break on me. I do install the steel sleeve in the input drum to prevent the input shaft from splitting open the input drum. This rarely happens though.

 

I was hoping for a few answers to this too I have the 4l65 3/4 drum and wanted something stronger.

 

its is true the stock input shaft breakin is very rare as is brealing the drum , I have only ever seen one instance of each and in each case there were mitigating factors. If i was going to spend money i would probably spend it else where. or just get one with the sleeve installed as mentioned by PBA