INIT2WIN

iTrader: (8)

What is the difference between the 4L60E and the 4L65E? Is one stronger than the other? Is the 4L60E and 4L65E the same size, are they the same length? Would I bennifit from upgrading to a 4L65E in my 02 Z28?

performabuilt

iTrader: (25)

Dimensionally they are the same, The main difference is the addition of 5 pinion planets. There were a few other minor upgrades made similar to what you would see in a built 4l60e. But for the most part that is the main change.

bene

iTrader: (16)

What is the role of 5 pinion planets? What's the benefit of it?

performabuilt

iTrader: (25)

They are suposed to be stronger, Though I have heard different veiws on that since there are many high powered vehicles running the 4 pinion without incident.

FLT

iTrader: (1)

The five pinion planets are rated to take more torque. I would only suggest using OEM AC Delco ones. There are some cheap knock offs out there so be careful as to what you purchase.

INIT2WIN

iTrader: (8)

So would a 4L65E be a good upgrade for me if my 4L60E goes out again? I have the 4L60E built once before and I don't want to have to keep worrying about when it is going to go out again. My car is a blot on car right now but I plan on a H/C package in the near future. Or would I be better to go all the way with a 4L80E?