[prodigy200424]

I just rebuilt my c4 tranni with a trans-brake and it shifts great until it warms up. What will happen is when I shift to high gear (3rd) the moter will lug down like hitting the brakes pretty bad. I built it to the specs on the sheet but I think one of the bands are to tight. Factory specs call for 1 and 1/2 turns backoff after torqueing bolt and the specs for the transbrake I put in calls for 1 1/4 turn back off. I used all alto clutches and bands. I know the intermediate band has to release for high gear,right? any help would be appreciated.

 

[Mario428]

Do you have a C-4 or a C-5, fine or coarse thread 2nd gear adjuster?
Fine thread adjuster has to turned twice as much.

 

[prodigy200424]

its a c4 with course thread nuts

 

[Mario428]

OK sure does sound like you have some leakage somewhere causing you problems.

What are the details on your 2nd gear servo, I like my seals so tight the piston is hard to push back and forth. Heaven forbid you did not do the infamous servo mod.

Who built the VB?

 

[prodigy200424]

Yea I did the servo mod but didnt like it, I also seen that after putting in a full manual valve body that most people who "professionally" build them just use the stock one. It shifts damn hard by the pressure it has now, 210lbs. I have a c servo and might change it out later.
Anyway I fixed the problem, the valvebody was sticking between 2 and 3. Thanks for all the replys.

 

[CometGT1974]

I had a feeling it was a v-body issue! Glad you figured it out.