Red25thRS

has anyone seen or purchased TCI's new Jumbo servos for there 700r4...They have them for 2nd and 4th gear..i was just wondering if they are worth 100 bucks they say its has 35% more apply area than the vette servo soo i imagine that is good....do u think its work the 100 bucks to do that to my tranny

Pro Built Automatics

The Performance Shift kit along with the Corvette servo & larger boost valves will do more for the transmission without the side effects of the oversize servos.

rtr

I agree. When a huge servo is used, sure it increases the apply area, which gives a hard 1-2 shift, but come time for the 2-3 shift, the servo is now slower to release because the 3rd apply oil has to push that servo back against that larger area and move the correspondingly larger volume of oil to release the band.

So that nice hard 2-3 shift that the new servo gave you is really the transmission being in 2nd and 3rd at the same time momentarily. Result - bye bye 3-4 clutches.

I'd listen to probuilt and do some searching - he is one of the most knowledgable poeople about the 700 I have come across.

Red25thRS

Do you know a good website that sells the vette servo and a bigger boost valve...i noticed TCI has a mega boost valve for my tranny i just dont know if its too big or what....they sell a .570 inch TV boost valve and a .400 Low/rev boost valve...should i get those...thx for your help

Pro Built Automatics

I use the .500 main boost valve & a .296 intermediate/reverse boost valve. These have worked well in all of my 10 & 11 second transmissions. I see no reason for running the extreme boost valves, as they raise line pressure beyond what is needed/required. I carry everything that you need. Give me a call? 800 7763288 anytime past 12 noon PST.

Red25thRS

hey pro built im goin to be calling to get prices on those things...and im a retard when it comes to trannys but what is the damn tv cable i hear people talkin bout adjusting it to get better performance but ill talk your word on tranny stuff so i dont blow mine up...any info would be good....thx

Red25thRS

hey pro built...ok my tranny is stock...if i buy the transgo transpak from u that will come with all the kit the servo..does it come with bigger tv boost valves...i want my shifts to be snappy...i just wanted to make sure when i buy it...that it comes with servo..tv valves and that i will have manual control...thx

Pro Built Automatics

Yes, the Performance Shift kit comes with the both boost valves, Corvette servo, & the necessary seals.