I put in a shift kit in the 700r4 1 to 2 is good but 2 to 3 and 3 to 4 is still very soft. I have the lock up wired so i have to turn it on and even when I leave it off or on its still soft. will a corvett servo make the shifts 23 34 any harder???

 

I've never been able to get any 700R-4 to give a solid 2-3. That's just the way it is, as far as I can tell. as for the 3-4, that shouldn't be a solid upshift, the related parts are too weak for such nonsense. If you want to bark the tires into third, you must abandon the 700R-4.

 

If the trans is in "good" condition, install a modified TransGo shift kit from ProBuilt Automatics, or better yet get a Street / Strip overhaul kit / trans from ProBuilt. Solid 2-3 up-shift? Heck yes!

Bill

 

I got the shift kit from probuilt and the 2-3 shift is very firm at wot, the tires almost broke loose, i bet with a 350 they would.

 

I had a 2-3 shift flare that started one day in my s10. I put in a cheap B&M shift kit, which helped the trans in virtually all respects, but did not help the 2-3 shift firmness. It made it upshift faster, but not firmer if that makes sense. My TCI 700r4 in my car is awesome, and shifts just as firm 2-3 as 1-2. You don't have to abandon the 700r4, obviously there's a way. A corvette servo or larger can't hurt, check out this site- you may find some good info.
http://www.transmissioncenter.net/pe...automotive.htm

 

lockup slips anyway so it won't help much...

88vette with 2.59 gears and trans go 2-3 kit, I bang out 1-2 any time I want and very firm 2-3 hahah I bet once it gets colder out it might be able chirp 2-3 at 90mph, I think I might have built my trans to max the sun shell can handle. Transgo kits are very good, they have steps on how to mod the servo that will help too.

 

I used the transgo kit as well and it's great. I did the stage 2 but then put in the stage 1 1-2 shift spring cuz that one was a little hard for my taste, but now it's all nice and firm.

 

Awesome Info THANKS EVERYONE!!!!!!!! I am getting this info a little late but I havent done any trans mods since this post. I used to get an e-mail everytime someone replied but for some reson I dont get thoes anymore (Ill def have to fix that mail prob) and looks like iv missed out on the exact info I was looking for. Im def going to look into a pro built trans or at least a transpack from them. I have the transpac from b&m but it only good for the 1-2. I useally get the TCI transcat but I havent see one of thoes in a while. But thanks agin this 2-3 soft shif is killing me lol.. It shifts like..........................1-----------bark2-------soft3-------soft4 lol. Which 3-4 being softer I can handel but after my 2-3 now I get out of the mood to keep the peadl down.. Who carries the shif kit and trans you guys are talking about???????? Im just going to do a search on probuilt and see what I come up with thanks agin!!!!!

 

www.700r4l60e.com = ProBuilt website.

Bill