I just had a Corvette servo put into my 89 700R4 tranny today...The trans already had a B&M Shiftkit in it, and shifted pretty good...With the new servo the 1 to 2 shift is weaker than it was, it is much like it was before the shift kit was installed...Any ideas on what could have went wrong???? It came with new o rings, could one have been left out??? Thanks for any help on this subject.....Tom

 

Well the problem was incorrect instalation...It now shifts very hard.....There was a small pin that was not installed correctly, or not at all......Tom

 

I'm glad you got it resolved, and I'm sorry none of us had the answer for you.

 

And by the way, thank you for sharing, in case anyone else ever has that issue.

 

Super servos are where its at...not much more then a corvette servo from what I remember but mine has been in for 3 years now.

It sounds to me they just didn't get the spacing right. if the pin was not installed at all then you would not have had a 1-2 shift. The servo you had replaced applies the 2nd gear band via fluid pressure and that pin. when you buy a super servo for example they give you a spacer to allow you to get the proper length needed.

Thanks for this post!

Jason

 

Thanks everyone.....I have been helped more times on this board than I can count.........

 

i used one of those super servoes in my old 700r4, it was great

 

Mine works real well now...It makes The car so much more fun to drive...It was just an instalation problem im sure....Tom