HAs anyone ever had success building there own 4l60E? Like buying the parts, and putting it together yourself. I have a friend willing to help me who has rebuilt his fair share of transmissions, and will help me with the process.

 

i dont really recommend it myself.. i had all the recommended high-perf parts used in mine (while it lasted it would chirp third at wot in the right conditions) and had it built by a local highly recomended shop.. it broke a year later and im still waiting on a crossmember/ta mount for my new m6 lol

 

I wouldn't do it.

But if you do, good luck!

 

rebuilding an auto tranny is like rebuilding a carburetor, a lot of parts that come out in order and must go back in, in that order. except when you screw up, it's a major pain in the backside to get the thing back out.

now rebuilding an electronic tranny is like rebuilding an electronic carb, you add in sensors that are hard to understand the purpose of, and the fact that electricity flows through basically everything contained in your tranny, if you have a manual, and have the parts, go for it, but be prepared to fail,

it should also be noted that the expense in rebuilding a transimission is the time, it'll take many hours to do it, and the parts cost is basically negligible. for instance; cost to have one torn down and inspected, then ressembled, versus torn down and rebuilt completely is only about $50 in my case.


if you do rebuild it, do it like you would a carb, take digital photos of every step along the way, and keep all the parts in the order in which they came out, make sure you have some sort of diagram to put it back together for reference, but once you tear it down and inspect it, soak your parts, and reasemble, use the photos to show you how to put the parts back in, and the diagram if something isnt working right. Most importantly have your rebuild kit and everything, so that you tear it down and immediately reassemble, the longer you wait to put it back together the more you'll forget about how it came apart.

 

Not a tranny like the 4L60E. I've got a race (i.e. non-automatic) Powerglide in my track car, and I have rebuilt that with the help of a good book, a shop manual, and an experienced friend to call on. But that tranny is much less complicated than the 4L60E and therefore much easier to troubleshoot. It's also much easier (as in ~10 minutes) to get it out in case of a problem. Most of the cost is in the parts. You can save a few bucks by doing the R+R yourself and then take it to a good shop. At least that's what I would recommend.

Rich