see this is what i am talking about.people will speak-on something they know nothing about.when my defective 4l60e went out..i went on forums they have on these transmissions and went too the dealer..i called gm in Detroit.they will tell you the same thing..because.they are not going to make any of them good..they did away with the 4l60e and the 4l80e because they had internal oiling problems and defective parts..they even installed at the factory..trans coolers..to try and help the problem,but it did not work..the trans guy at the dealership..told the same thing..defective parts and a internal oiling problem..he had a lot full of them.pulling them out.every day..fixing them.even new front wheel drive cadillacs.with internal pressure problems..gm did away with both transmissions.because.they would not hold up.i do not know.anything about the new replacement..or if it will interchange.gm,s designers..tried to correct the oiling problems.for years..but could not do it..if the gm people could not fix this internal trans problem.a rebuilder is not either.he is installing all up graded parts.that will stand up to the oiling problem and the extra heat.generated.go on line..you will see and read.what all the custom builders.do to the trans..i would trust some that i have seen..
I assume you are reffering to other people on other forums not KNOWING what they are talking about when it comes to transmissions. It is true. I see **** all the time that erks me on other forums. When I see them, I just want to sign up on that forum just to call the poster stupid for spreding bad info. Then I realize its a post that is 2 years old, so why bother. Biggest lie I see, is someone asks, I have a 4x4, or a street strip truck. I want to put a bad ass tough transmission in it which is stronger the Th400 or the 700r4. Then you see a response like, go for the 700r4 dude, Th400 are POS. I got news. Th400 is NOT a POS by far. It has its downsides but strength is not one of them.
I will disagree with you on your statement, if the GM people could not fix a problem, then a rebuilder can't either. That is not true. There are aftermarket companies like Sonnax who disect transmission problems of all makes and models and their engineers will make aftermarket parts for the corrections that GM failed to do. Like the Beast sunshell for example. Sonnax made that part in the mid 80's. GM finally made a new sunshell that is as good, maybe even a little better than the beast just a couple/few years ago. Sonnax also makes valve and bore repair kits where GM would trash the vavlebody and start over with a new one and the bore of the new vavlebody just starts wearing again like the last one did. The Sonnax fix is a fix and will repair the original valve body. There are several scenarios on that I can give where aftermarket companies have improved upon what GM failed to do. Also, GM came up with a 5 pinion planet, that really wasn't necessary. I have yet to open up a 700r4 or 4L60-E that had a broke 4 pinion planet. It sure doens't hurt though. I think GM needs to spend more time on engineering a new 3-4 clutch pack or a way to keep it cooler, rather then deal with a 5 pinion planet.
