any updates on how this is running...
I will be ordering a vette servo, 40k cooler, and Transgo HD2 for my CC 4wd NNBS.
I'm still debating about the 4th servo.

 

im running the 4th gear servo (billet) no real difference but then again i dont have the HD-2 shift kit in my tranny.
do they have a new shift kit out for the 07+ gmt900s or will my HD-2 shift kit from my 01 work in it.

 

the transgo kit in the truck worked good. if i did it again i would have put in one shim in the 1-2 accum housing. i never put any shims in. full throttle the shifts were faster. i had to get TM removed to get the full feel. that TM really makes the shift kit feel like its nothings changed from stock. you wont be able to change the boost valve with the nnbs trannys. there is a speed sensor of sort in the way of the boost valve. you cant change it with having pump out of transmission. also the 1-2 accum piston and fwd clutch piston are plastic. get new aluminum ones. the 4th accum piston is already aluminum so you dont have to worry about that one.

i dont have truck no more. since i found out gm offered 6.2 and 6 speed in 1500 trucks minus the expensive denali or suv types i jumped to that.


btw i have a sonnax 4th gear billet servo with less than 5000 kms on it if your interested. good deal to be had. i have no use for it anymore.

 

y did u pull out the sonnax?

 

i pulled it out cause i traded the truck off. put the stock servo back in before it went down the road. it had less than 5000 kms on it and i thought i would try reselling and get a little bit of money back on it. i have zero use for it now.