I have a 4L60E that I lost 2nd, overdrive, and reverse on. I am planning on rebuilding it with the help of my friend who went to Lincoln Tech. He said that since it is his first time to actually rebuild a trans outside of the school that he would only charge me for the parts. Plus I have known him since High School and me and him have been helping each other on both of our cars. I just think I am a little over my head with the whole rebuild so I am going to watch and learn mostly. I remember reading on here about how to rebuild the 4L60E to be more reliable and stronger. I have done a search and I have looked back 15 pages and I still can't find it so if there is someone on here that knows their stuff about the 4L60E please give me some advice on what to purchase to make this trans last until I can afford the 4L80E conversion. I remember reading that I should go with a 8 clutch pack for the 3-4 instead of the 9 because it is better a dissipating heat, but I can't remember everything else that was said and there was ALLOT of info if I remember correctly.