I've been studying 4L60E transmissions. I got an extra 4L60E to build myself and swap in. However, I have a few questions about parts. Curious has anybody on this form built their own 4L60E? Build is for a 6.0L Tahoe I'm making post bulletproof essentially (spec in signature). Will be over off road / slow overlanding, towing C5 Corvette to races, and road trips.

In a nutshell my specced parts below:

- Koleen steels w/ Alto Red Clutches
- Wideband
- Sonnax servos
- Sonnax smart shell
- 5 pinion planetary gear sets
- Then replace bushings, seals, etc. etc. etc. Not sure about a shift kit. I see Sonnax has kit to rebuild accumulators and pump kit I may throw in there too.

I'm curious about carbon clutches as well. I watched all the performa built stuff. I cannot figure out what clutch Ryan is referring to at 23:30 in this video below. I wrote them an email not for sure if they would divulge that information. Is it the Alto carbon clutches HERE?

 

No... he likes to use a Friction Plate from Allomatic for the Forward Clutch.

They are nice Frictions (I do like them)... However they are not needed 99% of the time as the Stock Forward Frictions are great!