Why Sad But True? 4L60-E is not much better than a 700r4. Actually worse in some areas. Give or Take... Pretty much if you get an 88 or later 700r4, it's as good as a 4L60-E. 4L60-E does have a couple little improvements, and those improvements DO retrofit all the way back to 87 700r4's and some go all the way back to 82. Just depends on the upgrade. And I don't know all of them wo checking back into it. It's very tough keeping up with updates when they were every year after year after year.
Well,I guess that sonds better.I was to the thinking the the 4L60E was a much better transmission.
I remember the owner of RED-D transmissions telling Me about the sungear shell and He replacing that along with a lot of other hard parts,and drilling out one of the fluid riflings to better improve the flow the the sungears.
I now have over a hundredthousand onb that rebuild and it seems to be working flawlessly,although,I do find that when it unlocks the convertor on a pull,it seems like it has enough torque to make it over the hill,then,BAM comes on third.I was thinking by,installing a switch so that I could manually unlock the converter,that in a lot of instances it would have enough torque to make the pull,without coming out of overdrive.
But then,it just may put a lot of unecessary strain on the sun/planetary gears that it coulkd destroy them again too,probably better oft to let it alone as it has lasted real good as it is,go messing aroun and ruin the whole works.
