Tuning for Valve body/shift kit

[secondarychaos]

Hey folks,
what do you change in the tuning (if anything) for a shift kit or valve body?
Is it worth getting one or should I just change line pressures further in the tuning?
Dan

[Power Hungry]

In general, we remove all shift pressure modifications and let the tranny do its thing.

Is it worth it? Yep. The changes in the valve body will allow fluid to flow easier without having to "push" it through the smaller orifices. This allows for much smoother and firmer shifts. Definitely worth the cabbage.

[secondarychaos]

thanks Bill.

[kokopellimotorsports]

I just ordered a valve body for my '05. So it is good to hear, Bill.

Ty

[secondarychaos]

Follow Up question: the line pressure modifications come in the TV slope category and TV pressure offset, right? are there any others that I need to change?

[Power Hungry]

TV Slope and Offset are used to modify holding pressure. You also have TV Pressure on shifts (1-2, 2-3, and 3-4) to modify these pressures up or down for shifting.

Hope this helps.

[soutthpaw]

I have a follow-up question too.
1. What do increased line pressures do ? (i thinking more hold force against slippage under high HP conditions)


2. What are the optimum and/or safe line pressures we should be using?


3. I did the transgo shift kit in my tranny but didn't install the new pump valve and spring because I didn't want to take tranny out... can I tune to duplicate what that pump pressure spring does? If and when I do a TC upgrade.

4. Which settings control how hard and which control how fast the trans shifts?