4l60e complete upgrade discussion

Making them difficult to find in good condition.
I use them because they Flow a greater Volume of Oil (especially at High RPM) than a 10 or 13-Vane Rotor.
They work Best at higher Line-Pressures.
GM went from a 7-Vane Rotor to a 10 vane Rotor for better Line-Pressure Consistency (sacrificing Volume).
However at higher Line-Pressures, this "less frequent pulse" from the rotor is far less observed, just like anything where the velocity is increased.
So we get greater Volume and have greater Line Pressure (due to our greater Boost Valve Sizes and Firmer Springs)...
Win Win!!!

Last edited by vorteciroc; Dec 7, 2023 at 10:33 PM.
And the Manual has some issues, Such as it will tell you the Overun clutch is on and 1-2 in d3 2 or 1, It is not , Its only on in D3 3rd gear not in 1-2 manually or automatically.
Just a thought
I'd recommend for most guys that they do this with a setscrew.
Makes it easily removable should they ever desire. And a setscrew with some red loctite will seal 100% from either side.









