What are the mode ppl do to make the th700 more performant and durable. Other that the trans go shift kit, why do ppl put corvette servo and boost valves? tnx for any help

was to "fix" the 2-3 flare/spinup on the 2-3 shift, with engines that had some power & using the 553 servo, this helped the 1-2 & 2-3 shifts. The Corvette servo is also the 3rd gear accumulator. The boost valve raises line pressure all around.

PM Pro Built Automatics, hes your guy on the 700r4 stuff. check his site out too. http://www.pro-built.net/

Kevin

checking out his site.. interesting stuff !

Tnx

may sound stupid ... but what exactly is a servo... and where is it located on the tranny

there is alot that can be done to them. here's a small list from mine that i put in another post:

yeah, i have some pictures of mine a some other stuff on my picture site.

LINK

i've also got alot more if you need something specific for pictures. i build them myself and in my personal vehicle i have:

1991 4L60
raybestos blue plate clutches
koelene steels
kevlar band
4L65E reaction carrier asssembly
upgraded sunshell kit including upgraded reaction carrier shaft
superior products shift correction kit
.500 boost valve
superior products billet super servo
superior products 3-4 billet servo
w.o.t. throttle valve shift sleave
superior products larger low/reverse boost valve
13 vane pump kit

that's all i can remember off hand. recently broke the reaction carrier (in the pictures also known as a planetary set) and at that time i did the sunshell kit upgrade along with the much stronger 4L65E (machined steel instead of cast iron) reaction carrier assembly. pretty happy with it overall. i wouldn't recomend the kolene's with the blue plates as it will wear them out quickly. i'd go with the 8 place rcpbp-15 clutch plate set which comes with the blue plate clutch kit including 8 3-4 clutch set up and all the steels they have specificly for the blue plates.

I am going to critique this build on the 1991 4L60.
(1) raybestos blue plate clutches, expensive, 3 to 4 times the cost and not as good as the BW's Hi-Energys on the street, strip only, maybe.
(2) kolene steels, good.
(3) kevlar band, no good, use the BW Hi-Energy.
(4) 4L65E reaction carrier asssembly, there is nothing wrong with the 4 pinion, so why spend the money (they don't break).
(6) upgraded sunshell kit including upgraded reaction carrier shaft, this is fine.
(7) superior products shift correction kit, this kit does not offer anywhere near the results of the Trans-Go.
(8) .500 boost valve, good.
(9) superior products billet super servo, not necessary (overkill).
(10) superior products 3-4 billet servo , not necessary, and is addressed when installing the Trans-go Performance Shift kit.
(11) w.o.t. throttle valve shift sleeve, good but you can do this to the stock sleeve for $.34.
(12) superior products larger low/reverse boost valve, as long as it is .296" or .300" this is fine, the .400 is an overkill.
(13) 13 vane pump kit, NO, unless you do the other modifications to the stator half of the pump, you will lose pump volume.
By doing this, you will spend a lot of money & not see the results you would like in the long run. There is a lot of misinformation out there. If I can be of help, let me know?