I am going Radix soon. The truck is an 05 Z71, L33 5.3, 3.42 locker, Corsa, K&N drop in w\10k miles. Michelin CrosTerrain P265/70R17H tires.
I want to prepare the tranny for it and if possible get an Atlanta to Chattanooga area shop referral.
Before you guys start,
Look at my driving habits to see if I need much at all. I know the 4L60E is a weak link and just want to do what I need for my application. It's my daily driver so I don't want to beat my back out or chirp tires on every shift. I will be doing equally Interstate, small highway, and back road traffic duals. I also make 500 mile runs on I-75 several times a year and go fast when I can.
No track style standing start launching. If a guy wants to challenge at a light I will act uninterested until up to speed. 3.42 gears you know. I am adding the Radix because I am a 51 year old muscle car baby boomer and want to have fun making want a bee's spook.

And I am wondering how the programmer that comes in the kit will effect the shifting after the mechanical mods?

 

I have beat the crap out of my 4L60-E for 20K now and have not had a problem(knock on wood) . If you drive normal, and get on it for fun I think you will be ok with a servo upgrade.

 

...Tell me more about the servo upgrade. I understand it can be done without pulling the trans. What or which servo or servo's? Replace the plastic?