Shift firmness with Torque Converter

dgoodhue

BuSTeD 4.3
My transmission doesn't seem to have the harsh 1-2 shift anymore after rebuild and new TC. I have a TCS 9/11 stall converter.

Side Note: I ordered a 2800 rpm stall but I sent it back for 2500 rpm stall. I don't think TCS ever restalled though. I had talked to TCS on the phone before sending it in. He said to leave my info and he would call me. 2 month later after hearing nothing I call him up. He said he had no idea why I sent it because it was brand new :roll: I told him my build changed. Two month later I call again nothing happened (6 months total). I called again, the guy handling my TC was on vaction, but they said my TC was done.

It shifts quick but not harsh and I do have an original Sy Valve Body. It sort of shifts like my 2-3 shift at part thottle (no WOT yet) and reminds me of how my Corvetted shift. Is this normal or should I be looking diagnosis this problem. It doesn't fell like the trans is slipping and I am getting normal trans temps (160-180 during normal driving)
 

It's just a six

Super Member
Re: Shift firmness with Torque Converter

What does the restalled converter stall to now?

"A looser converter will soften the shift feel" X2
 

SY2932

Administrator
Re: Shift firmness with Torque Converter

A looser converter will soften the shift feel.

X3. My bud's 9/11 is so loose he can have the truck in drive, take his foot off the brake, and the truck won't move unless he gives it some gas... He doesn't mind it too much since he figures that is the only reason his trans has lasted as long as it has :lol:. Your TV cable adjustment is good and *holding* correct? The teeth on it are plastic and they will strip out.
 

turbodig

Active member
Re: Shift firmness with Torque Converter

My transmission doesn't seem to have the harsh 1-2 shift anymore after rebuild and new TC. I have a TCS 9/11 stall converter.

Side Note: I ordered a 2800 rpm stall but I sent it back for 2500 rpm stall. I don't think TCS ever restalled though. I had talked to TCS on the phone before sending it in. He said to leave my info and he would call me. 2 month later after hearing nothing I call him up. He said he had no idea why I sent it because it was brand new :roll: I told him my build changed. Two month later I call again nothing happened (6 months total). I called again, the guy handling my TC was on vaction, but they said my TC was done.

It shifts quick but not harsh and I do have an original Sy Valve Body. It sort of shifts like my 2-3 shift at part thottle (no WOT yet) and reminds me of how my Corvetted shift. Is this normal or should I be looking diagnosis this problem. It doesn't fell like the trans is slipping and I am getting normal trans temps (160-180 during normal driving)

Normal. My 2800 TCS 9/11 did the same thing when I put it in.
Scared the crap out of me at first, thought I had smoked the 1-2 band, but it's just the way it behaves.
 

sy#2716

SyTy 4 Life
Re: Shift firmness with Torque Converter

Same here. When i had the trans rebuilt put a 9/11 2800 in the shift were still pretty firm. When i had the converter restalled to 3200 it was not as harsh but still had a good quick shift but not as harsh.
 
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