I just wanted to know the difference between the 2 transmissions? Are they the same cases with different internals? I know the 65 is stronger, but what are somethings that make it stronger? Is it a direct replacement for the 60?

 

5 pinion planets. I have no idea what that actually is or how it increases strength. It uses the same case and is a direct replacement.

 

Read this:

Inside GM's stronger, faster 4L65-E transmission

 

Thanks, good article

 

kick ***! no wonder I havent blown this one up like I did all the 4L60's I had in the past


but then again, I havent done any neutral drops in this truck either!