[ZLRob]

Originally Posted by KingLT1

I would never have thought that little amount of extra fluid would cause those issues.

An old trick with GM transmissions (at least older stuff like the 4l60) has been to slightly overfill them to remedy any kind of shift flare or slip...especially after installing a higher stall converter.

Yeah since these 10 speeds don't need to be so tall in gearing due to having so many gears they get pissed off if they are under or overfilled even a little bit, when I called NGD they told me to inspect the fluid color and level before anything, but they never emphasized the level being exact like the way they had to RadZ28. I really didn't think it would be that big of a deal, but apparently it is.

Originally Posted by JSH

Has your TCM been tuned? By way of example, mine has adjusted base pressure, Line pressure, Offset pressure, all adjusted for the setup, as well as TCC setup and shift times adjusted.

Does it slip mild throttle, wot only, partial, which gear? Was the level inspected?

It was slipping at mild throttle like accelerating up to speed and wide open. Initially it was only slipping when really cold under wide open throttle in 7th but then eventually it started not liking it so much that those symptoms started emanating themselves in mild throttle when hot as well in 7th, but it was only ever in that gear and in reverse when cold.


TCM got tuned, as I finally decided to get it unlocked so I can get it tuned and is now adjusted in all of the areas that you highlighted in your examples. I think it's because 7th gear is 1:1 it expects to see precision in fluid level and values, especially since the transmission now sees more power in that gear than it has ever seen in stock form.